000 00295nam a2200097Ia 4500
008 230421s9999 xx 000 0 eng d
100 _aGupta (Suryadev) Tyagi (Onkar Singh)
245 0 _aVigyan Shikshan (Vishayvastu Avam Shikshan Vidiya)
260 _bArihant Shiksha Prakashak
942 _2ddc
_cBED
999 _c21489
_d21489