Dugatkin, Lee Alan <br/><br/>
Cooperation among animals :  an evolutionary perspective / 
Lee Alan Dugatkin. 
 - New York :  Oxford University Press,  c1997. 
 - xiii, 221p. : ill. ; 24 cm. 
 - Oxford series in ecology and evolution .
<br/><br/> Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0195086228 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animal behavior.<br/>Cooperativeness.