Simpson, George Gaylord, 1902-  Simpson, George Gaylord, 1902- <br/><br/>
Principles of animal taxonomy. 

 - New York,  Columbia University Press,  1961. 
 - Columbia biological series, no. 20 .
<br/><br/><label>LCCN: </label>60013939 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology -- Classification.--Zoology -- Classification.
<br/><br/><label>LC Class. No.: </label>QL351  / .S5 1961 
<br/><br/><label>Dewey Class. No.: </label>590.12