000 00394nam a2200169Ia 4500
020 _a9789812808134
040 _cPK-LaCSN
082 _a500
_bHO
100 _aHo peck leng
245 0 _aSecondary science
_bworkbook
260 _c1997
_bSingapore
_aMalaysia
300 _a144
700 _aThe city school
942 _cTB
999 _c835486
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