000 00359nam a2200157Ia 4500
020 _a9780602575151
040 _cPK-LaCSN
082 _a510
_bMER
100 _aMerttens, Ruth
245 0 _aAbacus evolve 3 textbook 2
260 _c2007
_bPEARSON
_aOXFORD
300 _a80
942 _cTR
999 _c859559
_d859536