000 00291nam a2200109Ia 4500
008 220510s1989 xx 000 0 und d
041 _aeng
082 _a510.07
_bSOB
100 _aSobel,Max A,
_9780099
245 _aTeaching Mathematics
260 _aGoa:
_bThomas Stephens Konakni Kendr,
_c1989
999 _c530313
_d530313