000 00339nam a2200145Ia 4500
020 _a1-904467-52-3
082 _bT 1655
_a001.642
100 _a"Heathcote P M"
245 0 _aA' Levels Computing
260 _b,Payne-Gallway
_aUK
_c2006
300 _a396
944 _cTB
999 _c673421
_d673421