Dixson, A. F. The natural history of the gorilla A.F. Dixson ; with a foreword by R.D. Martin. - New York Columbia University Press 1981. - xviii, 202 p., [8] leaves of plates ill. Includes index. Bibliography: p. 180-198. ISBN: 0231053185 LCCN: 81000057 //r902 Subjects--Topical Terms: Gorilla. LC Class. No.: QL737.P96 / D59 1981 Dewey Class. No.: 599.88/46