000 00402nam a2200169Ia 4500
020 _a9780190701567
040 _cPK-LaCSN
082 _a510
_bYEE
100 _aChang suo hui
245 0 _aPrimary mathematics workbook
260 _c1968
_boxford press
_asingapore
300 _a225
700 _aDr foong pui yee
942 _cTB
999 _c836717
_d836694