Kummer, Hans, 1930- Primate societies : group techniques of ecological adaptation. - Chicago : Aldineˇ Atherton, [1971] - 160 p. : illus. ; 23 cm. - Worlds of man . Bibliography: p. 155-158. Subjects--Topical Terms: Primates--Behavior. Social behavior in animals. Dewey Class. No.: 599/.8/045