Simpson, George Gaylord,  1902- <br/><br/>
Principles of animal taxonomy / 
George Gaylord Simpson. 
 - 1st. Indian ed. 
 - Calcutta :  Oxford Book Company,  1965 
 - x, 247 p. :  ill. ;  24 cm. 
 - Columbia biological series no.20 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology--Classification