theories and skills for social workers Hardcastle, David A. creator Powers, Patricia R. Wenocur, Stanley text xx New York Oxford University Press 1997 9999 monographic und eng xii, 450 p. : ill. ; 24 cm. by David A. Hardcastle, Stanley Wenocur, Patricia R. Powers Service social Social service Social workers HV40 .H289 1997 0195093526 9780195093520 201220