000 00450nam a2200217Ia 4500
008 240107s9999 xx 000 0 und d
082 _a513.TYR
082 _bTYR
100 _aTYRA M
245 0 _aCONCEPT OF ARITHAMATIC
245 0 _aCONCEPT OF ARITHAMATIC
250 _n1st
260 _aNEW DELHI
260 _bBSC
260 _c2000
300 _a524
365 _b160
650 _aMATHEMATICS
650 _bMATHS
942 _cREF
999 _c10431
_d10431