Bertrand, M <br/><br/>
Training without reward: traditional training of pig-tailed macaques as coconut harvesters.  [electronic resource] 

 -  Science (New York, N.Y.)  Jan 1967 
 - 484-6 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0036-8075 
<br/><br/><label>Standard No.: </label>10.1126/science.155.3761.484  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Avoidance Learning<br/>Behavior, Animal<br/>Discrimination Learning<br/>Haplorhini<br/>Male<br/>Punishment<br/>Thailand