Understanding chimpanzees / 
edited by Paul G.Heltne, Linda A.Marquardt ; with 31 contributors. 
 - Cambridge, Mass. :  Harvard University Press,  1989. 
 - xviiii, 407 p. :  ill., maps ;  26 cm. 
 - Special publication / Chicago Academy of Sciences ;  no. 16 .
 - Special publication (Chicago Academy of Sciences) ;  no. 16. .
<br/><br/> In cooperation with the Chicago Academy of Sciences. 
<br/><br/>Includes bibliographical refereneces and index. 
<br/><br/><label>ISBN: </label>0674920910 (alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chimpanzees.
<br/><br/><label>LC Class. No.: </label>QL737.P96  / U54 1989