000 00329nam a2200145Ia 4500
020 _a9780602575731
082 _bT 604
_a510
100 _a"Merttens Ruth"
245 0 _aAbacus 4 textbook 2
260 _bGinn
_aPakistan
_c2007
300 _a80
944 _cTR
999 _c726543
_d726543