000 00348nam a2200145Ia 4500
020 _a9781471809309
082 _b1902
_a001.642
100 _a"Watson, David"
245 0 _aCambridge IGCSE Computer Science
260 _bHodder Education
_c2018
300 _a177
944 _cTR
999 _c573690
_d573690