American men and women of science :  formerly American men of science : a bibliographical directory founded in 1906 / 
edited by the Jaques Catell Press 
 - 12th ed. 
 - New York :  R. R. Bowker,  1971 
 - 6 v. ;  32 cm. 
<br/><br/><label>ISBN: </label>0835205002 
<br/><br/><label>LCCN: </label>76-7326 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Scientists--United States--Biography--Dictionaries