000 00348nam a2200157Ia 4500
020 _a9971636158
040 _cPK-LaCSN
082 _a510
_bONG
100 _a"Ong, Pauline"
245 0 _aMathematics
260 _c2002
_bPAn pacific
_aSingapore
300 _a84
942 _cTB
999 _c837842
_d837819