RT Book T1 The helping group: therapeutic principles and issues A1 Lakin, Martin LA English PP Reading, Mass. u.a. PB Addison-Wesley YR 1985 UL https://krimdok.uni-tuebingen.de/Record/27346423X SN 0201117681 SN 0394350588 SN 0080361021 K1 Psychotherapy, Group K1 Self-help groups K1 Gruppentherapie K1 Gruppenberatung K1 Selbsthilfegruppe