00743nam0-22002651i-450-99000048848040332120100329103619.0000048848FED01000048848(Aleph)000048848FED0100004884820020821d1969----km-y0itay50------baengy-------001yyIndustrial area floodlightingLondonIlluminating engineering society196922 p.Illuminating engineering society technical report13Illuminating Engineering SocietyITUNINARICAUNIMARCBK99000048848040332110 D IV 108495 DEEDINELDINELUNINA