TY - BOOK ID - 136347484 TI - Effective groupwork : an introduction to principle and method PY - 1976 SN - 0809618451 PB - New York (N.Y.): Association press DB - UniCat KW - Group relations training KW - Social group work UR - https://www.unicat.be/uniCat?func=search&query=sysid:136347484 AB - ER -