Wilson, Gertrude, 1895-1982. Social group work practice : the creative use of the social process / Gertrude Wilson, Gladys Rylan.d. - Boston : Houghton Mifflin Co., [1949] - xii, 687 p. ; 23 cm. Includes bibliography (p. 623-675) and index. LCCN: 49011016 Subjects--Topical Terms: Social group work. LC Class. No.: HV45 / .W5