00358nam a2200121Ia 4500008004100000040002500041082001400066100001800080245006800098250001800166260004100184300001100225230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a158.3 Eg1  aEgan, Gereld  4aThe skilled helper : a systematic approach to effective helping  aThird Edition  bBrooks/Cole Publishing Companyc1985  a391 p.