000 00332nam a2200145Ia 4500
020 _a9971892154
082 _bT-69
_a540
100 _a"McElroy, Mark"
245 0 _aGCE O-Level Chemistry
260 _bLongman
_aSingapore
_c1990
300 _a347
944 _cTB
999 _c686848
_d686848