Lippitt, Ronald The dynamics of planned change : a comparative study of principles and techniques / Ronald Lippitt; Jeanne C Watson; Bruce H Westley - New York : Harcout, Brace and company, c1958. - viii, 312 p. ; 21 cm. Includes bibliography & index Subjects--Topical Terms: Social ChangeChange (Psychology) Dewey Class. No.: 303.4 / LID 1958