Issues in psychotherapy research / edited by Michel Hersen, Larry Michelson, and Alan S. Bellack. Hersen, Michel. Michelson, Larry, 1952- Bellack, Alan S. Psychotherapy Research. Psychotherapy. Research Methods. 616.89 19 HEI Includes bibliographies and index. New York : Plenum Press, c1984. c1984. 1984 Text xii, 423 p. : eng Applied clinical psychology