000 00300nam a2200121Ia 4500
008 240531s9999 xx 000 0 und d
020 _a978 0 566 07415 8
082 _a658 4 ROB
100 _aRobson,Mike.
245 0 _aProblen solving and groups.
260 _aLondon
_b Gower
_c1995
942 _cANF
999 _c306608
_d306608