000 00344nam a2200145Ia 4500
020 _a9789812808103
082 _bT-220
_a500
100 _a"Leng,Ho Peck"
245 0 _aInternational Lower Secondary SciencE 1
260 _aSINGAPORE
_c2009
300 _a203
944 _cTB
999 _c665278
_d665278