000 00364nam a2200157Ia 4500
020 _a0000000000000
040 _cPK-LaCSN
082 _a510
100 _aTan winnie
245 0 _aProgressive mathematics
260 _c2010
_boxford university press
_akarachi
300 _a66
942 _cBK
999 _c837661
_d837638