Comparative psychology and the great apes:  their competence in learning, language, and numbers.
Rumbaugh
D M
DM
Georgia State University.
D000818:Animals; D001522:Behavior, Animal; D003071:Cognition; D005260:Female; D015186:Hominidae / Q000523:psychology*; D007802:Language; D007858:Learning; D008253:Macaca mulatta; D008297:Male; D011323:Primates; D011587:Psychology, Comparative