Laboratory approval-test specifications; specifications for desirable illumination; specially designed reflectors and lens; parabolic-reflector disadvantages; photometric-test values.
Desirable road-illumination
Soc. Automotive Engrs. -- Jl
Society of Automotive Engineers -- Journal ; 14 , n 5
1924
6 pages
10 Figs.
Article (Journal)
English
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ROAD SURFACE ILLUMINATION DEVICE AND ROAD SURFACE ILLUMINATION METHOD
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