000 00315nam a2200121Ia 4500
082 _a302.34
_bHEA
100 _aHeap, Ken
245 _aGroup theory for social workers : an introduction.
260 _aNew York,Oxford etc
_bPergamon Press
_c1977
300 _a252p.
890 _aUnited States
999 _c13349
_d13349