000 00327nam a2200145Ia 4500
020 _a9780602575724
082 _b1151
_a510
100 _a"Merttens, Ruth"
245 0 _aABACUS EVOLVE TEXTBOOK 4-1
260 _bGINN
_c2007
300 _a80
944 _cTR
999 _c526902
_d526902