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      <Form990ScheduleDPartXIV>
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        <Explanation>Earnings from the Endowment are used to further the exempt purposes of the organization. Approximately 1/3 each for unrestricted, prizes &amp; awards, various scientific programs.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>Part XI, line 8</Identifier>
        <Explanation>Amount consists of $3,040,169 of unrealized loss on derivatitves and $63, 525 of unrealized loss on charitable gift annuities.</Explanation>
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      <Form990ScheduleDPartXIV>
        <Identifier>Part XII, line 2d</Identifier>
        <Explanation>Amount reported includes $43,367, 998 of unrealized loss on investments, $17,575,241 of cost of goods sold, $951,404 of rental expense, $599,139 of investment-related expenses, $3,040,169 of unrealized loss on derivatitves and $63,525 of unrealized loss on charitable gift annuities.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>FIN 48 (ASC 740)</Identifier>
        <Explanation>NAS is exempt from federal income taxes under Section 501(c)(3) of the Internal Revenue Code, except for unrelated business income. NAS recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. NAS does not believe its financial statements include any uncertain tax positions.</Explanation>
      </Form990ScheduleDPartXIV>
      <Form990ScheduleDPartXIV>
        <Identifier>Part XIII, line 2d</Identifier>
        <Explanation>Amount reported includes $17,575,241 of cost of goods sold, $951,404 of rental expense, and $599,139 of investment-related expenses.</Explanation>
      </Form990ScheduleDPartXIV>
    </IRS990ScheduleD>
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        <TypeOfActivitiesConducted>Program Services</TypeOfActivitiesConducted>
        <SpecificServicesProvided>RADIATION EFFECTS RES</SpecificServicesProvided>
        <TotalExpenditures>1640007</TotalExpenditures>
      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Sub-Saharan Africa</Region>
        <TypeOfActivitiesConducted>Grantmaking</TypeOfActivitiesConducted>
        <SpecificServicesProvided>AFRICAN ACADEMY DEV</SpecificServicesProvided>
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      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Central America and the Caribbean</Region>
        <TypeOfActivitiesConducted>Investments</TypeOfActivitiesConducted>
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      </AcctsActvsOutUSTable>
      <AcctsActvsOutUSTable>
        <Region>Europe (Including Iceland and Greenland)</Region>
        <TypeOfActivitiesConducted>Investments</TypeOfActivitiesConducted>
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        <Region>Sub-Saharan Africa</Region>
        <PurposeOfGrant>AFRICAN SCIENCE ACADEMY DEVELOPMENT</PurposeOfGrant>
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      <GrantsToOrgsOutsideUS>
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      <GrantsToOrgsOutsideUS>
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        <PurposeOfGrant>AFRICAN SCIENCE ACADEMY DEVELOPMENT</PurposeOfGrant>
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      <GrantsToOrgsOutsideUS>
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      <GrantsToIndOutsideUS>
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          <State>OK</State>
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          <BusinessNameLine1>JOHNS HOPKINS UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>1101 E 33rd Street Ste D200</AddressLine1>
          <City>BALTIMORE</City>
          <State>MD</State>
          <ZIPCode>21218</ZIPCode>
        </AddressUS>
        <EINOfRecipient>520595110</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>12811</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>STANFORD UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>340 PANAMA STREET</AddressLine1>
          <City>STANFORD</City>
          <State>CA</State>
          <ZIPCode>94305</ZIPCode>
        </AddressUS>
        <EINOfRecipient>941156365</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>100000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF CALIFORNIA - SAN FRANCISCO</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>UCSF Box 0248</AddressLine1>
          <City>San Francisco</City>
          <State>CA</State>
          <ZIPCode>94143</ZIPCode>
        </AddressUS>
        <EINOfRecipient>946036493</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>51500</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF CALIFORNIA - DAVIS</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>1850 RESEARCH PARK DR</AddressLine1>
          <AddressLine2>STE 300</AddressLine2>
          <City>DAVIS</City>
          <State>CA</State>
          <ZIPCode>95618</ZIPCode>
        </AddressUS>
        <EINOfRecipient>946036494</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>13603</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF CALIFORNIA - LOS ANGELES</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>1100 KINROSS AVE</AddressLine1>
          <City>LOS ANGELES</City>
          <State>CA</State>
          <ZIPCode>90095</ZIPCode>
        </AddressUS>
        <EINOfRecipient>956006143</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>100000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF COLORADO</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>CAMPUS BOX 425</AddressLine1>
          <City>BOULDER</City>
          <State>CO</State>
          <ZIPCode>80309</ZIPCode>
        </AddressUS>
        <EINOfRecipient>846000555</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>76500</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>BOARD OF REGENTS UNIV OF NEVADA</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>OFFICE OF SPONSORED PROJECTS</AddressLine1>
          <AddressLine2>ROSS HALL 204</AddressLine2>
          <City>RENO</City>
          <State>NV</State>
          <ZIPCode>89557</ZIPCode>
        </AddressUS>
        <EINOfRecipient>391805963</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>34616</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>BRIGHAM YOUNG UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>FINANCIAL SERVICES/RESEARCH</AddressLine1>
          <AddressLine2>PO BOX 21128</AddressLine2>
          <City>PROVO</City>
          <State>UT</State>
          <ZIPCode>84602</ZIPCode>
        </AddressUS>
        <EINOfRecipient>870217280</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>7679</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>DANFORTH PLANT SCIENCE CENTER</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>975 NORTH WARSON ROAD</AddressLine1>
          <City>ST LOUIS</City>
          <State>MO</State>
          <ZIPCode>63132</ZIPCode>
        </AddressUS>
        <EINOfRecipient>311584621</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>210219</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>FOGARTY INTERNATIONAL CENTER</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>9000 ROCKVILLE PIKE</AddressLine1>
          <City>BETHESDA</City>
          <State>MD</State>
          <ZIPCode>20892</ZIPCode>
        </AddressUS>
        <EINOfRecipient>520858115</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>125215</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>GEORGE WASHINGTON UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>44983 KNOLL SQUARE</AddressLine1>
          <AddressLine2>2ND FLOOR</AddressLine2>
          <City>ASHBURN</City>
          <State>VA</State>
          <ZIPCode>20147</ZIPCode>
        </AddressUS>
        <EINOfRecipient>530196584</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>5820</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>JACKSON STATE UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>PO BOX 17250</AddressLine1>
          <City>JACKSON</City>
          <State>MS</State>
          <ZIPCode>39217</ZIPCode>
        </AddressUS>
        <EINOfRecipient>646000507</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>14411</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>NORTH DAKOTA STATE UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>PO BOX 6050</AddressLine1>
          <City>FARGO</City>
          <State>ND</State>
          <ZIPCode>58108</ZIPCode>
        </AddressUS>
        <EINOfRecipient>456002439</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>9585</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>NORTHWESTERN UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>633 CLARK STREET</AddressLine1>
          <City>EVANSTON</City>
          <State>IL</State>
          <ZIPCode>60208</ZIPCode>
        </AddressUS>
        <EINOfRecipient>362167817</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>25000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>OHIO UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>104 RESEARCH TECHNOLOGY CENTER</AddressLine1>
          <City>ATHENS</City>
          <State>OH</State>
          <ZIPCode>45701</ZIPCode>
        </AddressUS>
        <EINOfRecipient>316402113</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>25000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF WISCONSIN</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>21 N PARK STREET</AddressLine1>
          <AddressLine2>SUITE 6401</AddressLine2>
          <City>MADISON</City>
          <State>WI</State>
          <ZIPCode>53715</ZIPCode>
        </AddressUS>
        <EINOfRecipient>391805963</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>12121</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
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      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF CENTRAL FLORIDA</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>12201 RESEARCH PKWY SUITE 501</AddressLine1>
          <City>ORLANDO</City>
          <State>FL</State>
          <ZIPCode>32826</ZIPCode>
        </AddressUS>
        <EINOfRecipient>532924021</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>5923</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
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      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF DELAWARE</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>WILLARD HALL ROOM 201</AddressLine1>
          <City>NEWARK</City>
          <State>DE</State>
          <ZIPCode>19716</ZIPCode>
        </AddressUS>
        <EINOfRecipient>516000297</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>9604</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF FLORIDA</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>164 GRINTER HALL</AddressLine1>
          <City>GAINSVILLE</City>
          <State>FL</State>
          <ZIPCode>32611</ZIPCode>
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        <EINOfRecipient>596002052</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>8901</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
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          <BusinessNameLine1>UNIVERSITY OF HOUSTON</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>208 E CULLEN BLDG</AddressLine1>
          <City>HOUSTON</City>
          <State>TX</State>
          <ZIPCode>77204</ZIPCode>
        </AddressUS>
        <EINOfRecipient>746001399</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>11325</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF MASSACHUSETTS</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>70 BUTTERFIELD TERRACE</AddressLine1>
          <City>AMHERST</City>
          <State>MA</State>
          <ZIPCode>01003</ZIPCode>
        </AddressUS>
        <EINOfRecipient>043167352</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>10239</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF MICHIGAN</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>3003 SOUTH STATE STREET</AddressLine1>
          <City>ANN ARBOR</City>
          <State>MI</State>
          <ZIPCode>48109</ZIPCode>
        </AddressUS>
        <EINOfRecipient>386006309</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>56377</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>WASHINGTON UNIVERSITY IN ST LOUIS</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>700 ROSENDALE</AddressLine1>
          <City>ST LOUIS</City>
          <State>MO</State>
          <ZIPCode>63112</ZIPCode>
        </AddressUS>
        <EINOfRecipient>430653611</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>100000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>REGENTS OF THE UNIVERSITY OF CA - IRVINE</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>1400 BIOLOGICAL SCIENCES 3</AddressLine1>
          <City>IRVINE</City>
          <State>CA</State>
          <ZIPCode>92697</ZIPCode>
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        <EINOfRecipient>952226406</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>71000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
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          <BusinessNameLine1>REGENTS OF THE UNIVERSITY OF MINNESOTA</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>200 OAK ST SE SUITE 450</AddressLine1>
          <City>MINNEAPOLIS</City>
          <State>MN</State>
          <ZIPCode>55455</ZIPCode>
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        <EINOfRecipient>416007513</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>75000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>RICE UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>6100 MAIN STREET</AddressLine1>
          <City>HOUSTON</City>
          <State>TX</State>
          <ZIPCode>77252</ZIPCode>
        </AddressUS>
        <EINOfRecipient>741109620</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>75000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>TRUSTEES OF PRINCETON UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>4 NEW SOUTH BUILDING</AddressLine1>
          <City>PRINCETON</City>
          <State>NJ</State>
          <ZIPCode>08544</ZIPCode>
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        <EINOfRecipient>210634501</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>75000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
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          <BusinessNameLine1>UNC SCHOOL OF MEDICINE</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>170 MANNING DRIVE</AddressLine1>
          <City>CHAPEL HILL</City>
          <State>NC</State>
          <ZIPCode>27599</ZIPCode>
        </AddressUS>
        <EINOfRecipient>561118388</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>15629</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF NORTH CAROLINA - CHAPEL HILL</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>104 AIRPORT DR STE 2200</AddressLine1>
          <City>CHAPEL HILL</City>
          <State>NC</State>
          <ZIPCode>27599</ZIPCode>
        </AddressUS>
        <EINOfRecipient>566001393</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>100000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF ARIZONA</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>SPONSORED PROJECT SERVICES</AddressLine1>
          <City>TUCSON</City>
          <State>AZ</State>
          <ZIPCode>85722</ZIPCode>
        </AddressUS>
        <EINOfRecipient>866004791</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>15630</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
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          <BusinessNameLine1>UNIVERSITY OF SOUTH CAROLINA</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>901 SUMTER STREET</AddressLine1>
          <City>COLUMBIA</City>
          <State>SC</State>
          <ZIPCode>29208</ZIPCode>
        </AddressUS>
        <EINOfRecipient>576001153</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>100000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>UNIVERSITY OF WASHINGTON</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>1107 NE 45TH STREET STE 440</AddressLine1>
          <City>SEATTLE</City>
          <State>WA</State>
          <ZIPCode>98105</ZIPCode>
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        <EINOfRecipient>916001537</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>53000</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
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          <BusinessNameLine1>USAMRIID</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>1425 PORTER STREET</AddressLine1>
          <City>FREDERICK</City>
          <State>MD</State>
          <ZIPCode>21702</ZIPCode>
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        <EINOfRecipient>521283120</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>198525</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
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          <BusinessNameLine1>VIRGINIA COMMONWEALTH UNIVERSITY</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>821 WEST FRANKLIN STREET</AddressLine1>
          <City>RICHMOND</City>
          <State>VA</State>
          <ZIPCode>23284</ZIPCode>
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        <EINOfRecipient>546001755</EINOfRecipient>
        <IRCSection>GOVT</IRCSection>
        <AmountOfCashGrant>46575</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANT</PurposeOfGrant>
      </RecipientTable>
      <RecipientTable>
        <RecipientNameBusiness>
          <BusinessNameLine1>SIGMA XI</BusinessNameLine1>
        </RecipientNameBusiness>
        <AddressUS>
          <AddressLine1>3106 EAST NC HWY 54</AddressLine1>
          <City>RESEARCH TRIANGLE PK</City>
          <State>NC</State>
          <ZIPCode>27709</ZIPCode>
        </AddressUS>
        <EINOfRecipient>060655494</EINOfRecipient>
        <IRCSection>501C3</IRCSection>
        <AmountOfCashGrant>122315</AmountOfCashGrant>
        <PurposeOfGrant>RESEARCH GRANTS</PurposeOfGrant>
      </RecipientTable>
      <TotalNbrOf501C3AndGovtGrants>15</TotalNbrOf501C3AndGovtGrants>
      <TotalNbrOfOtherOrganizations>27</TotalNbrOfOtherOrganizations>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>STIPENDS/REL EXPENSE</TypeOfGrant>
        <NumberOfRecipients>1837</NumberOfRecipients>
        <AmountOfCashGrant>30000809</AmountOfCashGrant>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>TRAVEL GRANTS</TypeOfGrant>
        <NumberOfRecipients>1177</NumberOfRecipients>
        <AmountOfCashGrant>2737725</AmountOfCashGrant>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>FELLOWSHIPS</TypeOfGrant>
        <NumberOfRecipients>22</NumberOfRecipients>
        <AmountOfCashGrant>354316</AmountOfCashGrant>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>HONORARIA PRIZES &amp; AWARDS</TypeOfGrant>
        <NumberOfRecipients>96</NumberOfRecipients>
        <AmountOfCashGrant>696542</AmountOfCashGrant>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIII>
        <TypeOfGrant>TUITION &amp; FEES</TypeOfGrant>
        <NumberOfRecipients>2</NumberOfRecipients>
        <AmountOfCashGrant>301000</AmountOfCashGrant>
      </Form990ScheduleIPartIII>
      <Form990ScheduleIPartIV>
        <Identifier>Schedule I, Part IV</Identifier>
        <Explanation>Disbursements for grants, scholarships, and fellowships are made in furtherance of the institution's exempt purposes and in accordance with procedures or subject to conditions established by the institution's governing board designed to ensure that individuals and organizations receiving disbursements from the organization in furtherance of its exempt purposes are adequately investigated to ensure that they are qualifying recipients.</Explanation>
      </Form990ScheduleIPartIV>
    </IRS990ScheduleI>
    <IRS990ScheduleJ documentId="IRS990ScheduleJ">
      <TravelForCompanions>X</TravelForCompanions>
      <IdemnificationGrossUpPayments>X</IdemnificationGrossUpPayments>
      <WrittenPolicyReTAndEExpenses>true</WrittenPolicyReTAndEExpenses>
      <SubstantiationRequired>true</SubstantiationRequired>
      <CompensationCommittee>X</CompensationCommittee>
      <CompensationSurvey>X</CompensationSurvey>
      <BoardOrCommitteeApproval>X</BoardOrCommitteeApproval>
      <SeverancePayment>false</SeverancePayment>
      <SupplementalNonqualRetirePlan>false</SupplementalNonqualRetirePlan>
      <EquityBasedCompArrangement>false</EquityBasedCompArrangement>
      <CompBasedOnRevenueOfFilingOrg>false</CompBasedOnRevenueOfFilingOrg>
      <CompBasedOnRevenueRelatedOrgs>false</CompBasedOnRevenueRelatedOrgs>
      <CompBasedNetEarningsFilingOrg>false</CompBasedNetEarningsFilingOrg>
      <CompBasedNetEarningsRelateOrgs>false</CompBasedNetEarningsRelateOrgs>
      <AnyNonFixedPayments>true</AnyNonFixedPayments>
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        <CompReportPrior990FilingOrg>0</CompReportPrior990FilingOrg>
        <CompReportPrior990RelatedOrgs>0</CompReportPrior990RelatedOrgs>
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      <Form990ScheduleJPartII>
        <NamePerson>CHARLES VEST</NamePerson>
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      <Form990ScheduleJPartIII>
        <Identifier>Schedule J, Part I, line 1, Tax indemnifications and gross-up payments</Identifier>
        <Explanation>NAS provides tax equalization payments for employees on international assignment greater than six months. The objective of the NAS tax equalization guidelines is to provide a framework whereby an employee may be transferred to and among international location(s) while incurring an individual tax burden similar to that which the employee would have been paid had the employee not received allowances and special tax considerations resulting from a foreign assignment.</Explanation>
      </Form990ScheduleJPartIII>
      <Form990ScheduleJPartIII>
        <Identifier>Schedule J, Part-Time Officers Compensation</Identifier>
        <Explanation>For the Vice President, Treasurer, Foreign Secretary and Home Secretary, work is based on a percentage level of effort, which ranges between 25% and 50% . NAS REIMBURSES EACH PART-TIME OFFICER'S HOME INSTITUTION FOR THE APPLICABLE PERCENTAGE OF SALARY AND BENEFITS PAID BY THE HOME INSTITUTION.</Explanation>
      </Form990ScheduleJPartIII>
      <Form990ScheduleJPartIII>
        <Identifier>SCHEDULE J, PART I, LINE 1, TRAVEL FOR COMPANIONS</Identifier>
        <Explanation>NAS PROVIDES REIMBURSEMENT FOR THE TRAVEL EXPENSES OF ONLY THE SPOUSES OF THE PRESIDENTS OF THE NAS, NAE AND IOM, AND ONLY IN CIRCUMSTANCES IN WHICH THE SPOUSE'S PRESENCE SERVES A BONA FIDE BUSINESS PURPOSE OF THE NAS AND THE EXPENSES HAVE BEEN PROPERLY SUBSTANTIATED, IN ACCORDANCE WITH THE NAS POLICY ON PRESIDENTIAL EXPENSES. COMPLIANCE WITH THE POLICY IS VERIFIED EACH YEAR THROUGH A SURVEY OF THE EXECUTIVE OFFICES OF THE PRESIDENTS.</Explanation>
      </Form990ScheduleJPartIII>
      <Form990ScheduleJPartIII>
        <Identifier>Schedule J, Part I, line 7</Identifier>
        <Explanation>Non-fixed payments: A listed person received a lump-sum merit award.</Explanation>
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        <DescriptionOfPurpose>REFUND SERIES 1999B &amp; 1999C BONDS</DescriptionOfPurpose>
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        <DescriptionOfPurpose>REFUND SERIES 1999A BONDS</DescriptionOfPurpose>
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        <DateIssued>2010-05-20</DateIssued>
        <IssuePrice>60876507</IssuePrice>
        <DescriptionOfPurpose>RESTORE CONSTITUTION AVE FACILITY</DescriptionOfPurpose>
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      <Form990ScheduleKPartVI>
        <Identifier>SCHEDULE K, PART III, LINE 3A, COLUMN C</Identifier>
        <ReturnReference>0</ReturnReference>
        <Explanation>NAS HAS ENTERED INTO A MANAGEMENT OR SERVICE CONTRACT, WHICH NAS BELIEVES SATISFIES THE SAFE HARBOR STANDARDS UNDER REV. PROC. 97-13.</Explanation>
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      <Form990ScheduleKPartVI>
        <Identifier>SCHEDULE K, PART III, LINE 3B, COLUMN C</Identifier>
        <ReturnReference>0</ReturnReference>
        <Explanation>THE NAS ENTERED INTO RESEARCH AGREEMENTS, WHICH NAS BELIEVES SATISFIES THE SAFE HARBOR STANDARDS UNDER REV. PROC. 2007-47.</Explanation>
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    </IRS990ScheduleK>
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        <NamePerson>RALPH J CICERONE</NamePerson>
        <PurposeOfLoan>PURCHASE RESIDENCE</PurposeOfLoan>
        <LoanFromOrganization>X</LoanFromOrganization>
        <OriginalPrincipalAmount>2250000</OriginalPrincipalAmount>
        <BalanceDue>2250000</BalanceDue>
        <Default>false</Default>
        <ApprovedByBoard>true</ApprovedByBoard>
        <WrittenAgreement>true</WrittenAgreement>
      </LoanTable>
      <LoanTable>
        <NamePerson>CHARLES VEST</NamePerson>
        <PurposeOfLoan>PURCHASE RESIDENCE</PurposeOfLoan>
        <LoanFromOrganization>X</LoanFromOrganization>
        <OriginalPrincipalAmount>1000000</OriginalPrincipalAmount>
        <BalanceDue>750000</BalanceDue>
        <Default>false</Default>
        <ApprovedByBoard>true</ApprovedByBoard>
        <WrittenAgreement>true</WrittenAgreement>
      </LoanTable>
      <TotalBalanceDue>3000000</TotalBalanceDue>
    </IRS990ScheduleL>
    <IRS990ScheduleM documentId="IRS990ScheduleM">
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      <ArtHistoricalTreasures />
      <ArtFractionalInterest />
      <BooksAndPublications />
      <ClothingAndHouseholdGoods />
      <CarsAndOtherVehicles />
      <BoatsAndPlanes />
      <IntellectualProperty />
      <SecuritiesPubliclyTraded>
        <NonCashCheckbox>X</NonCashCheckbox>
        <NumberOfContributions>11</NumberOfContributions>
        <NoncashContribsRptdF990>114753</NoncashContribsRptdF990>
        <MethodOfDeterminingRevenues>Sale Price</MethodOfDeterminingRevenues>
      </SecuritiesPubliclyTraded>
      <SecuritiesCloselyHeldStock />
      <SecuritiesPrtnrshpTrustIntrsts />
      <SecuritiesMiscellaneous />
      <QualifiedContribHistStruct />
      <QualifiedContribOther />
      <RealEstateResidential />
      <RealEstateCommercial />
      <RealEstateOther />
      <Collectibles />
      <FoodInventory />
      <DrugsAndMedicalSupplies />
      <Taxidermy />
      <HistoricalArtifacts />
      <ScientificSpecimens />
      <ArchaeologicalArtifacts />
      <AnyPropertyThatMustBeHeld>false</AnyPropertyThatMustBeHeld>
      <ReviewProcessUnusualNCGifts>true</ReviewProcessUnusualNCGifts>
      <ThirdPartiesUsed>false</ThirdPartiesUsed>
    </IRS990ScheduleM>
    <IRS990ScheduleO documentId="IRS990ScheduleO">
      <GeneralExplanation>
        <Identifier>Part VI, Section A, Lines 6, 7a and 7b Governance</Identifier>
        <Explanation>The organization is a private membership organization. Amendments to the organization's constitution and bylaws, and election of new members, officers, and council members require a vote of the members. The officers of the organization, together with twelve members to be elected, shall constitute the National Academy of Sciences (NAS) council for the transaction of such business as may be assigned to it by the constitution, bylaws, or the membership. The NAS council has general supervision over the election of the officers of the organization, and shall set the date for election and appointing nominating committees. The NAS council may delegate its authority to appropriate officials of the organization except with respect to those authorities concerning membership affairs.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Part VI, Section B, Line 11 Policies</Identifier>
        <Explanation>The Draft 990 is prepared by the Office of the Chief Financial Officer. It is reviewed by the Office of General Counsel and an external tax advisor before being reviewed by the auditing committee. The final form is then provided to the full NAS Council prior to its submission.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Part VI, Section B, Lines 12b, 12c Policies</Identifier>
        <Explanation>Annually, the general counsel leads a discussion at a meeting of officers and directors at which the conflict of interest policy is reviewed. All officers/directors are asked about any current conflicts and required to sign a statement that they understand and will abide by all conflict of interest policies and procedures.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Part VI, Section B, Line 15</Identifier>
        <Explanation>Compensation decisions for all disqualified persons as defined in IRC section 4958 are made annually by an executive compensation committee composed of independent directors on the basis of comparability data and there is a record of their deliberations and decisions. Compensation decisions are made annually for other key and highly paid employees by a committee of senior staff on the basis of comparability data.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Part VI, Section C Disclosure, line 19</Identifier>
        <Explanation>NAS makes its governing documents, conflict of interest policy, and financial statements available to the public upon request. THE GOVERNING DOCUMENTS AND ANNUAL FINANCIAL STATEMENTS ARE ALSO AVAILABLE ON THE ORGANIZATION'S WEBSITE.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Part XI, Line 5</Identifier>
        <Explanation>Amount reported includes $43,368,017 of unrealized loss on investments, $3,040,169 of unrealized loss on derivatives, and $63,525 of unrealized loss on charitable gift annuities.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>Part VI, Section A, Line 4</Identifier>
        <Explanation>In 2011, the organization amended Article IV of its bylaws to provide (1) that beginning with the organization's 2012 Annual Meeting, eighty-four members would be elected to the Annual Meeting and each Annual Meeting thereafter until 2017; and (2) an increase in the number of foreign associates resident in the US that may be elected annually from two to three.</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:RALPH J CICERONE TITLE:PRESIDENT HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:JEREMIAH OSTRIKER TITLE:TREASURER HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:CHARLES VEST TITLE:PRESIDENT - NAE HOURS:2</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:HARVEY FINEBERG TITLE:PRESIDENT - IOM HOURS:1</Explanation>
      </GeneralExplanation>
      <GeneralExplanation>
        <Identifier>HOURS DEVOTED FOR RELATED ORGANIZATION</Identifier>
        <ReturnReference>FORM 990 PART VII</ReturnReference>
        <Explanation>NAME:MARY SALMON TITLE:CFO HOURS:1</Explanation>
      </GeneralExplanation>
    </IRS990ScheduleO>
    <IRS990ScheduleR documentId="IRS990ScheduleR">
      <Form990ScheduleRPartI>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>NAS Title Holding LLC</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>5635 Bent Branch Road</AddressLine1>
          <City>Bethesda</City>
          <State>MD</State>
          <ZIPCode>20816</ZIPCode>
        </AddressUS>
        <EIN>530196932</EIN>
        <PrimaryActivities>Title Holding</PrimaryActivities>
        <LegalDomicileState>MD</LegalDomicileState>
        <EOYAssets>171046529</EOYAssets>
        <DirectControllingEntityName>
          <BusinessNameLine1>NAS</BusinessNameLine1>
        </DirectControllingEntityName>
      </Form990ScheduleRPartI>
      <Form990ScheduleRPartII>
        <NameOfDisregardedEntity>
          <BusinessNameLine1>The National Academies Corporation</BusinessNameLine1>
        </NameOfDisregardedEntity>
        <AddressUS>
          <AddressLine1>100 ACADEMY</AddressLine1>
          <City>IRVINE</City>
          <State>CA</State>
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        <ControlledOrg>true</ControlledOrg>
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        <PublicCharityStatus>11a</PublicCharityStatus>
        <DirectControllingEntityName>
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        <ControlledOrg>true</ControlledOrg>
      </Form990ScheduleRPartII>
      <ReceiptOfIntAnnRentsRoyalties>false</ReceiptOfIntAnnRentsRoyalties>
      <GiftGrantOrCapContrToOtherOrg>false</GiftGrantOrCapContrToOtherOrg>
      <GiftGrantOrCapContrFrOtherOrg>true</GiftGrantOrCapContrFrOtherOrg>
      <LoansOrGuaranteesToOtherOrg>false</LoansOrGuaranteesToOtherOrg>
      <LoansOrGuaranteesFromOtherOrg>false</LoansOrGuaranteesFromOtherOrg>
      <SaleOfAssetsToOtherOrg>false</SaleOfAssetsToOtherOrg>
      <PurchaseOfAssetsFromOtherOrg>false</PurchaseOfAssetsFromOtherOrg>
      <ExchangeOfAssets>false</ExchangeOfAssets>
      <RentalOfFacilitiesToOtherOrgs>false</RentalOfFacilitiesToOtherOrgs>
      <RentalOfFacilitiesFrOtherOrgs>false</RentalOfFacilitiesFrOtherOrgs>
      <PerformOfServicesForOtherOrgs>true</PerformOfServicesForOtherOrgs>
      <PerformOfServicesByOtherOrgs>false</PerformOfServicesByOtherOrgs>
      <SharingOfFacilities>true</SharingOfFacilities>
      <SharingOfPaidEmployees>true</SharingOfPaidEmployees>
      <ReimbursementPaidToOtherOrg>false</ReimbursementPaidToOtherOrg>
      <ReimbursementPaidByOtherOrg>true</ReimbursementPaidByOtherOrg>
      <OtherTransferToOtherOrg>true</OtherTransferToOtherOrg>
      <OtherTransferFromOtherOrg>false</OtherTransferFromOtherOrg>
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          <BusinessNameLine1>NATIONAL ACADEMY OF ENGINEERING FUND</BusinessNameLine1>
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        <MethodOfAmtDetermination>CASH</MethodOfAmtDetermination>
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        <NameOfOtherOrganization>
          <BusinessNameLine1>THE NATIONAL ACADEMIES CORPORATION</BusinessNameLine1>
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        <MethodOfAmtDetermination>CASH</MethodOfAmtDetermination>
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        <MethodOfAmtDetermination>CASH</MethodOfAmtDetermination>
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</Return>