Cumming, John, Ego & milieo : Theory and practice of environmental therapy / John Cumming and Elance Cumming. - New York : Atherton press, c1962 [Printing 1966] . - xiii, 292 p. ; 23 cm. Includes index. Subjects--Topical Terms: Group psychotherapy.Ego (Psychology) Dewey Class. No.: 616.8915 / CUE 1966