000 00372nam a2200145Ia 4500
020 _a0000000000
040 _cPK-LaCSN
082 _b1657_T
_a500
245 0 _aInternational lower secondary science 1
260 _c2009:
_aSingapore,
_bMarshall Cavendish education.
300 _a0
942 _2ddc
_cTB
999 _c733634
_d733634