Heap, Ken, 1929- The practice of social work with groups : a systematic approach / Ken Heap. - London : George Allen & Unwin, 1985. - xiii, 208 p. : ill. - National Institute social services library ; no. 49 . ISBN: 0043620590 (alk. paper) 0043620604 (pbk. : alk. paper) Subjects--Topical Terms: Social group work.Group relations training. LC Class. No.: HV45 / .H4184 1985 Dewey Class. No.: 361.4�19