000 00297nam a2200121Ia 4500
008 250224s9999 xx 000 0 und d
020 _a80166237
082 _a510CHA
100 _aChapman L R
245 4 _aThe Process Of Learning Mathematic
260 _bPergamon Press Ltd
_c1972
942 _cBK
999 _c431393
_d431393