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1955. Types of hostile display. Auk, vol. 72, No. 3, pp. 247-259. 



1962a. The organization and probable evolution of some mixed species flocks 



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 1962b. Hostile and sexual behavior patterns of South American and Pacific 



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1958. Beobachtungen uber das Instinktverhalten von Kapuzineraffen (Cebus 



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1963. Display of penile erection in squirrel monkey {Saimiri sciuretis). 



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1962. Sehorgan. In "Primatologia," ed. H. Hofer, A. H. Schultz, and 

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1962. Agonistic noises of the rhesus monkey (Macaca mulatta). Symp. 

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1962. Vocal communication by the rhesus monkey (Macaca mulatta). Proc. 

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1957. The monkey kingdom ; an introduction to the primates. New York. 

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1958. Animal behavior. Chicago. 

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1961. Principles of animal taxonomy. New York. 

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