000 00273nam a2200121Ia 4500
008 250224s9999 xx 000 0 und d
020 _a175116970
082 _a510MAC
100 _aMacdonald T
245 0 _aSecondary Mathematics
260 _bNelson
_c1983
942 _cBK
999 _c432073
_d432073