000 00326nam a2200145Ia 4500
020 _a9780602268213
082 _b595
_a510
100 _a"RUTH MERTTENS"
245 0 _aABACUS 4 NUMBER TEXTBOOK 1
260 _b,GINN
_c1997
300 _a64
944 _cTR
999 _c238987
_d238987