Behavioural diversity in chimpanzees and bonobos   
ed by Christophe Boesch, gottfried Hohmann and Linda F Mar 
 - Cambridge  Cambridge university press  2002 
 - ix, 285p. 
<br/><br/><label>ISBN: </label>0521006139 
<br/><br/><label>Dewey Class. No.: </label>599.885  / P02