000 00321nam a2200145Ia 4500
020 _a1857586018
082 _b468
_a001.642
100 _a"Heathcote, P.M."
245 0 _aA- Level Computing
260 _bLetts
_c2000
300 _a244
944 _cTR
999 _c528654
_d528654