Erford Bradley T. Ed. Group work Process and applications - 2nd - New York Routledge USA 2018 - xxxi,488p. cm. ISBN: 9780815363033 (pbk) UKP 47.99 Standard No.: 348,363 Source: 622, 24/01/2019, New India Book Agency Textual Subjects--Topical Terms: SOCIOLOGY Dewey Class. No.: YZ, Q8