Boyd, R. <br/><br/>
How humans evolved/ 
Robert Boyd and Joan B. Silk. 
 - 4th 
 - New York:  W.W. Norton  2006. 
 - xxiv, 488p.:  ill.;  27 cm. 
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0393926281 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human evolution.
<br/><br/><label>LC Class. No.: </label>DUCE GN281.B66