000 00355nam a2200145Ia 4500
020 _a9781107546738
082 _bT239
_a001.642
100 _a"Langfield ,Sylvia"
245 0 _aAS and A level computer science coursbook
260 _b,Cambridge
_c2015
300 _a440
944 _cTB
999 _c529608
_d529608