000 00349nam a2200145Ia 4500
020 _a9789810631154
082 _b2375
_a540
100 _a"Dr Rex M Heyworth"
245 0 _aChemistry for O levels
260 _bHodder Education
_aSingapore
_c2017
300 _a460
944 _cBK
999 _c490295
_d490295