000 00248nam a2200097Ia 4500
008 230421s9999 xx 000 0 eng d
100 _aMahto (Rani) Mehto (S.K.)
245 0 _aGrah Vigyan Shikshan
260 _bSaraswati Prakashan
942 _2ddc
_cBED
999 _c21540
_d21540