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Light and lighting (1908)
Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 125
Fig. 8. f 7-9 1 0 0 •■ ■■ 1 I7-9- Fig. 9. < ► < > < ► < > t 9-6 1 i > < > < > 4 > 19-6 1 Fig. 10. Diagrams showing positions of fittings in the various installations. THE ILLUMINATING ENGINEER (april 1922) 113 • 9-6* I —• —• • ■-• —•— —•— 1 . !9-6 1 Fig. 11. 0 #…Lighting
Internet Archive · University of Toronto Libraries · Public Domain Mark 1.0. Free to use for anything.
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