Oestrus, receptivity, and mating in chimpanzee /
Yerkes, Robert M.
Oestrus, receptivity, and mating in chimpanzee / by Robert M. Yerkes and James H. Elder - Baltimore, Md. : Johns Hopkins press, 1936 - 39 p. : ill. ; 26 cm - Comparative psychology monographs ; 13 .
Oestrus, receptivity, and mating in chimpanzee / by Robert M. Yerkes and James H. Elder - Baltimore, Md. : Johns Hopkins press, 1936 - 39 p. : ill. ; 26 cm - Comparative psychology monographs ; 13 .