000 00307nam a2200121Ia 4500
008 211209s1980 xx 000 0 und d
041 _aeng
082 _a510 N80 MAS
100 _aMASON R D
245 _aMATHEMATICS FOR BUSINESS AND CONSUMERS
260 _bBUSINESS PUBLICATIONS INC.
_c1980
300 _a506
999 _c19047
_d19047