000 00267nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aSharma, S.R.
245 0 _aVighyan Shikshan
260 _aNew Delhi
_bArjun Publishing House
_c2009
300 _a211p.
942 _cBK
999 _c13007
_d13007