Social intervention : a behavioral science approach / Edited and with introductions by Harvey A. Hornstein [and others] - New York : Free Press , 1971 - viii, 597 p. : illus. ; 25 cm. Includes bibliographies. Subjects--Topical Terms: Social change.Social action.Social systems. LC Class. No.: HM101 / .S693 Dewey Class. No.: 302 / SOC 1971