Bowles, Samuel. <br/><br/>
A cooperative species :  human reciprocity and its evolution / 
Samuel Bowles, Herbert Gintis. 
 - Princeton :  Princeton University Press,  2011. 
 - xii, 262 p. :  ill., maps ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9780691158167 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cooperation.<br/>Cooperativeness.<br/>Behavior evolution.
<br/><br/><label>Dewey Class. No.: </label>302.14 BOW