000 00416nam a22001697a 4500
003 NUST - PNEC
005 20170116180925.0
008 150905b xxu||||| |||| 00| 0 eng d
020 _a-
040 _cLIBRARY
082 _a621.321 COT
100 _97973
_aCotton, H.
245 _aPrinciples of illumination
_cH. Cotton
260 _cC.1960
650 _97978
_aElectrical Engineering
_xEL, EE
942 _2ddc
_cBK
999 _c65741
_d65741