000 00255nam a22001217a 4500
003 OSt
100 _aUpreti, Mishrilal
245 _aVigyan Shikshan
250 _a3rd ed.
260 _aAgra
_bAgarwal Publication
_c2014
300 _a82p.
942 _2ddc
_cBK
999 _c4639
_d4639