Social play in primates / 
edited by Euclid O. Smith. 
 - New York :  Academic Press,  1978. 
 - 324 p. ill. ;  23 cm. 
<br/><br/> Contains papers presented at the 1977 annual meeting of the Animal Behavior Society at Pennsylvania State University. 
<br/><br/><label>ISBN: </label>0126527504 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Primates--Behavior--Congresses.<br/>Play behavior in animals--Congresses.<br/>Social behavior in animals--Congresses.