Boyd, Robert, <br/><br/>
How Humans Evolved  Textual Documents 
By Robert Boyd & Joan B.Silk 
 - 4th ed. 
 - New York:  W.W.Norton & Company.,  1997. 
 - 485pg:  ills;  23cm. 
<br/><br/><label>ISBN: </label>0-393-92628-1 
<br/><br/><label>Subjects--Index Terms: </label>Archaeology Human Evolution G- Anthropology 
<br/><br/><label>Dewey Class. No.: </label>599.938