Washburn, S. L. 1911-2000. Ape into man : a study of human evolution / [by] S. L. Washburn [and] Ruth Moore. - Boston : Little, Brown, [1973, c1974] - xii, 196 p. : illus. ; 20 cm. Second ed. published in 1980 under title: Ape into human. Includes bibliographical references. Subjects--Topical Terms: Human evolution. Dewey Class. No.: 573.2