Boyd, Robert, <br/><br/>
How humans evolved / 
Robert Boyd, Joan B. Silk. 
 - 6th ed. 
 - New York :  W.W. Norton & Co.,  c2012. 
 - xxii, 416, 40 p. : 
<br/><br/><label>ISBN: </label>9780393912272 (pbk.) 0393912272 (pbk.) 
<br/><br/><label>Dewey Class. No.: </label>599  / BOY