000 00378nam a2200157Ia 4500
020 _a9780602575861
040 _cPK-LaCSN
082 _a510
_bMER
100 _aMerttens, Ruth
245 0 _aAbacus evolve textbook 1-6
260 _c2007
_bPearson Education Limited
_aHarcout
300 _a80
942 _cTR
999 _c859530
_d859507