000 00272nam a2200109Ia 4500
008 210501s9999 xx 000 0 und d
100 _aGupta; Shashi K.,SharmaR.K.Gupta
245 0 _aVitiya Prabandh
260 _c2017
_bKalyani Publishers
300 _aV. Pg.
942 _cBK
999 _c40536
_d40536