000 00253nam a22001217a 4500
003 OSt
100 _aRishishwar, Vinay
245 _aVigyan Shikshan
250 _a2nd
260 _aAgra
_bAgarwal Publication
_c2013
300 _a324p.
942 _2ddc
_cBK
999 _c4635
_d4635