Heap, Ken Group theory for social workers an introduction by Ken Heap. - 1st Eng. ed. - Oxford New York Pergamon Press 1977. - xiv, 252 p. 22 cm. - Social work series . Translation of Gruppeteori for sosialairbeidere. Includes index. Bibliography: p. 236-246. ISBN: 0080189563. 0080189555 LCCN: 76012521 //r83 Subjects--Topical Terms: Social groupsSocial group workSmall groups LC Class. No.: HM131 / .H3713 1977 Dewey Class. No.: 301.18/5