Notes that progress made in recent years permits use of sets on longer circuits with all stations cut in.
Development of train despatching by telephone
Ry. Signal Engr
Railway Signal Engineer ; 13 , n 1
1920
3 pages
2 Figs.
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1901
Train despatching by telephone
Engineering Index Backfile | 1908
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Engineering Index Backfile | 1927
|Simplification of train despatching
Engineering Index Backfile | 1901