00516nam a2200169Ia 4500008004100000010001400041020001800055040001700073082002400090100002000114245005700134250000800191260004200199300001500241440005600256650003400312190328s9999||||xx |||||||||||||| ||und||  a70-166043  a0-13-815662-4  aNITILcNITIL  221sta301.152bK82S  aKonopka, Gisela 0aSocial group workba helping processcGisela Konopka  a2nd  aEnglewood CliffsbPrentice Hallc1972  axii, 226p.  aPrentice Hall Sociology series/ed by Herbert Blumer  aSocial groups; Social service