000 00345nam a2200145Ia 4500
020 _a9812084282
082 _b4305
_a500
100 _a"tho lai hoong"
245 0 _aNew lower secondary Sciense 1
260 _b,Pan pacific
_asingapore
_c1997
300 _a287
944 _cTR
999 _c551119
_d551119