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Committee XII -- Highway crossing protection
Requisites for highway crossing signals; use of traffic signals for protection of highway railroad grade crossings; report on Federal and State activities. (Signal Sec)
Committee XII -- Highway crossing protection
Requisites for highway crossing signals; use of traffic signals for protection of highway railroad grade crossings; report on Federal and State activities. (Signal Sec)
Committee XII -- Highway crossing protection
Am Ry Assn -- Proc
American Railway Association -- Meeting ; 1934
1934
5 pages
Conference paper
English
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Committee XII -- Highway crossing protection
Engineering Index Backfile | 1932
Highway crossing protection (special committee)
Engineering Index Backfile | 1927
Committee XII -- Highway crossing protection
Engineering Index Backfile | 1934
Committee XII -- Highway crossing protection
Engineering Index Backfile | 1931
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