Simpson, George Gaylord, 1902- <br/><br/>
The geography of evolution :  collected essays / 
by George Gaylord Simpson 
 - Philadelphia :  Chilton Books,  1965 
 - x, 249 p. :  ill. , maps. ;  21 cm. 
<br/><br/>Includes bibliographies. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoogeography<br/>Evolution