The Mental Life of Monkeys and Apes: A Study of Ideational Behavior

Yerkes, Robert Mearns · 1956

BEHAVIOR MONOGRAPHS Volume 3, Number 1, 1916 Serial Number 12 Edited by JOHN B. WATSON The Johns Hopkins University 1. Skirrl, _Pithecus irus_ 2. Sobke, _Pithecus rhesus_ 3. Julius, _Pongo pygmaeus_…

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