000 00342nam a2200145Ia 4500
020 _a9789812808134
082 _bT-222
_a500
100 _a"Leng,Ho Peck"
245 0 _aInternational Lower Secondary SciencE
260 _aSINGAPORE
_c2009
300 _a144
944 _cTB
999 _c665280
_d665280