Report of special committee concerning: development on highway-crossing protection; Federal and State activities.
Highway crossing protection
Am. Ry. Assn, (Signal Section) -- Proc
American Railway Association -- Signal Section Proceedings ; 27 , n 3 ; p 542-546
1930
5 pages
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1915
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|Highway crossing protection in England
Engineering Index Backfile | 1934
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