000 00349nam a2200145Ia 4500
020 _a9789971808297
082 _b832
_a540
100 _a"Yoo ,Sharon"
245 0 _aO Level Classified Chemistry
260 _bSingapore Asian Publications
_c2000
300 _a200
944 _cBK
999 _c622246
_d622246