Bekoff, Marc <br/><br/>
Animal play 

 - Cambridge:  Cambridge Univeristy Press,  1998 
 - XVI-274 p. : ill. ; 23 cm 
<br/><br/><label>ISBN: </label>9780521586566 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Behaviour
<br/><br/><label>Dewey Class. No.: </label>591.563 BEK