Illuminating Engineering Society, Association of Public Lighting Engineers (Great Britain) · [London] · leaf 221
FIG tO POLAR CURVE OFLfiriP AND FITTING USEOOVER BENCHB lit FIG IB 206 THE ELLUMINATING ENGINEER [apro.) … V S hool Room lighted by low pressure iiu.iiKk-ii.iii u.i- (dired lighting).
Lighting
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