https://openlibrary.org/authors/OL120103A/Yerkes_Robert_Mearns
Yerkes, Robert Mearns | Open Library
Author of The mind of a gorilla, The great apes, Outline of a study of the self, The new world of science, Chimpanzee intelligence and its vocal expressions,...
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https://www.encyclopedia.com/social-sciences/applied-and-social-sciences-magazines/yerkes-robert-m
Yerkes, Robert M. | Encyclopedia.com
Yerkes, Robert M.WORKS BY YERKESSUPPLEMENTARY BIBLIOGRAPHY Source for information on Yerkes, Robert M.: International Encyclopedia of the Social Sciences...
yerkes robertencyclopedia