Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 240
C.—Showing back of case opened and detailsof instrument. THE ILLUMINATING ENGINEER (dec. L92i) Cosmos Gasfilled Type … VACUUM OR GASFILLEDLAMPS. will meet all your lightingrequirements. The new sizes of CosmosGasfilled Lamps :
Lighting
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
