000 00248nam a22001097a 4500
003 OSt
100 _aKulshreshtha, S P
245 _aShaikshik Takniki Ke Mool Aadhar
260 _aAgra
_bAgarwal Publication
_c2014
300 _a649p.
942 _2ddc
_cBK
999 _c4767
_d4767