No change in automatic train-control situation; improved operation saves huge sums. (See also Assn. -- Bul., vol. 32, no. 334, Feb. 1931, pp. 627-639) (including discussion)
Report on signals and interlocking
Ry. Age (Daily Edition)
Railway Age -- Daily Edition ; 90 , n 10C ; p 528-D87-88
1931
Article (Journal)
English
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Report on signals and interlocking
Engineering Index Backfile | 1930
Report on signals and interlocking
Engineering Index Backfile | 1929
Report on signals and interlocking
Engineering Index Backfile | 1931
Report on signals and interlocking
Engineering Index Backfile | 1928
Report on signals and interlocking
Engineering Index Backfile | 1930