Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 26
Fig. 2.—Light distribution from 100 watt Fig. 4.—Light distribution from 300 watt Half-Standard Metal Filament Lamps. (Fila- watt Type Lamp. (Filament No. 6 inment No. 1 in Fig. 1.) Fig. 1.)
Lighting
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