000 00267nam a2200097Ia 4500
008 230421s9999 xx 000 0 eng d
100 _aGupta (Suryadev) Soni (Anita) Tyagi
245 0 _aRasayan Vigyan Shikshan
260 _bArihant Shiksha Prakashan
942 _2ddc
_cBED
999 _c21696
_d21696