Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 245
THE ILLUMINATING ENGINEER (dec. 1921 ^JIIIIIIIIIIIIIIIIIIIIIMIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIMIIIIIIIIIlllllllilllllllllllllllLi: Of Attractive Design, Economical,Brilliant and Durable ^LSBACH Indoor Lamps Are Ideal for all Lighting Purposes
Lighting
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