000 00265nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aS.C.Sharma &R.C. Jain
245 0 _aVavshayik shankayki
260 _aSirmour
_bArya Pub.
_c2008
650 _aMath
942 _cBK
999 _c13272
_d13272