000 00450nam a22001697a 4500
003 NUST-PNEC
005 20170116180743.0
008 150112b xxu||||| |||| 00| 0 eng d
040 _cPNEC
082 _a025.52 KUM
100 _91199
_aKumar, Krishan
245 _aReference service
_cKrishan Kumar
260 _aSahibabad (India):
_bVikar Publishing House Pvt. Ltd.,
_cc1989.
300 _a431 p. :
_c22 cm.
650 _xGeneral
942 _2ddc
_cBK
999 _c62284
_d62284