000 00260nam a22001217a 4500
003 OSt
100 _aKulshrestha, S P
245 _aShaikshik Takniki ke Aadhar
260 _aAgra
_bAggarwal Pub.
_c2013
300 _a649p.
901 _a2311BED
942 _2ddc
_cBK
999 _c37543
_d37543