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2. Cognition, its origin and future in psychology;Bindra,1984
3. A field study of emotions, dominance, and social behavior in a group of baboons (Papio anubis);Buirski;Primates,1973
4. Sex differences, dominance and personality in the chimpanzee;Buirski;Anim. Behav.,1978
5. Grondproblemen van het dierlijk leven;Buytendijk,1938