000 00310nam a2200145Ia 4500
020 _a9881047719800
082 _bT-1138
_a540
100 _a"NIL"
245 0 _aCHEMISTRY KEY.POINTS
260 _aPK
_c2003
300 _a279
944 _cTR
999 _c797201
_d797201