Status of marker and classification lights with regard to operating rules; photometry tests for headlight reflectors recommended.
Report of committee (assn. ry. elec. engrs.) on locomotive headlights
Ry. Elec. Engr
Railway Electrical Engineer ; 14 , n 11
1923
6 pages
4 Figs.
Aufsatz (Zeitschrift)
Englisch
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