Orang-utan behavior / Terry L. Maple. Maple, Terry L. Orangutans Behavior. Mammals Behavior. QL737.P96 M36 1980 599.8842 MAO Includes indexes. Bibliography: p. 249-259. New York : Van Nostrand Reinhold Co., c1980. c1980. 1980 Text xii, 268 p. : eng Van Nostrand Reinhold primate behavior and development series