Beran, M J <br/><br/>
Summation and numerousness judgments of sequentially presented sets of items by chimpanzees (Pan troglodytes).  [electronic resource] 

 -  Journal of comparative psychology (Washington, D.C. : 1983)  Jun 2001 
 - 181-91 p.  digital 
<br/><br/> Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>0735-7036 
<br/><br/><label>Standard No.: </label>10.1037/0735-7036.115.2.181  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Behavior, Animal<br/>Choice Behavior<br/>Cognition<br/>Female<br/>Male<br/>Mathematics<br/>Pan troglodytes--psychology<br/>Serial Learning