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Proc Natl Acad Sci U S A
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v.2(11); Nov 1916
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Yerkes, R.
Proc Natl Acad Sci U S A.
1916 November;
2
(11)
: 639–642.
PMCID:
PMC1091123
Copyright notice
Ideational Behavior of Monkeys and Apes
Robert M. Yerkes
Psychological Laboratory, Harvard University
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