A history of the first half-century of the national academy of sciences,1863-1913 
edited by Frederick True                                         
 - Washington  National Academy of Sciences  1913 
 - xi, 397p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>History-National Academy of Sciences<br/>NASA Thesaurus<br/>National Academy of Sciences-History
<br/><br/><label>Universal Decimal Class. No.: </label>61  / NAT