Levy, Ronald B. 1911- Human relations, a conceptual approach / [by] Ronald B. Levy. - Scranton, Pa. : International Textbook Co., 1969. - xix, 209 p.; ill. ; 22 cm. Bibliography: p. 169-182. ISBN: 0700221875 Subjects--Topical Terms: Group relations training. Dewey Class. No.: 658.3 / LEH 1969