title: Observations on periodic changes in the sexual behaviour of a grey capuchin monkey, Cebus griseus Cuvier.
mesh_terms: D000818:Animals; D004971:Estrus; D005260:Female; D000882:Haplorhini / Q000502:physiology*; D010060:Ovulation; D011247:Pregnancy; D012726:Sexual Behavior, Animal / Q000502:physiology*