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Light and lighting (1908)
Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 463
1914 Fig. 1. . 6y MmIicpj.0 IS ;o Z5 Kl 3S «0 45 50 55 … LigSf IrcreoI.I 10 M 08 07 Ofe t t l Kosda lomp6Lighting
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
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