000 00292nam a2200121Ia 4500
008 250224s9999 xx 000 0 und d
020 _a602290511
082 _aJ510.7MER
100 _aMerttens Ruth
245 0 _aAbacus Number Textbook 2
260 _bGinn and Company
_c1999
942 _cJBK
999 _c440510
_d440510