000 00256nam a2200097Ia 4500
008 230421s9999 xx 000 0 eng d
100 _aVyas (Vijay Kumar Poswal) B.L.
245 0 _aBhautik Vigyan Shikshan
260 _bSaraswati Prakashan
942 _2ddc
_cBED
999 _c21775
_d21775