Basic Psychological Therapies: Comparative Effectiveness By A. J. Fix and E. A. Haffke. (Pp. 286; price not stated.) Human Sciences Press: New York. 1976. - Successful Psychotherapy Edited by J. L. Claghorn. (Pp. 208; illustrated; $12.95.) Brunner Mazel: New York. 1976. - What Makes Behaviour Change Possible? Edited by A. Burton. (Pp. 334; illustrated; $15.00.) Brunner Mazel: New York. 1976. - A Marital Therapy Manual By P. A. Martin. (Pp. 206; $12.50.) Brunner Mazel: New York. 1976. - Support Systems and Mutual Help Edited by G. Kaplan and M. Killilea. (Pp. 325; $19.50.) Grune & Stratton: New York. 1976. - Human Behaviour and the Helping Professions By O. Pollak. (Pp. 99; price not stated.) Spectrum: New York. 1976.