Maple, Terry L. Gorilla behavior / Terry L. Maple, Michael P. Hoff. - New York : Van Nostrand Reinhold, c1982. - ix, 290 p. : ill. ; 24 cm. Includes indexes. Bibliography: p. 271-282. ISBN: 0442251521 Subjects--Topical Terms: Gorilla--Behavior. Dewey Class. No.: 599.88460451 / MAG 1982