Hartford, Margaret E. Groups in social work application of small group theory and research to social work practice [by] Margaret E. Hartford. - New York Columbia University Press 1972 [c1971] - viii, 297 p. illus. 23 cm. 920504 Bibliography: p. [277]-294. ISBN: 0231035489 LCCN: 71181782 Subjects--Topical Terms: Social group workSmall groups LC Class. No.: HV45 / .H28 Dewey Class. No.: 361.4