Travers, Robert Morris William, 1913- Essentials of learning / [by] Robert M. W. Travers. - 3rd ed. - New York : Macmillan, [1971, c1972]. - x, 533 p. ; 24 cm. Includes bibliographical references (p. 495-518.) Subjects--Topical Terms: Learning. Dewey Class. No.: 370.152 TRA