Historical review of signaling progress since 17th century. (See also - discussion p 9-11)
Development of railway signalling
Newcomen Soc. -- Trans
1929
8 pages
3 Figs.
Aufsatz (Zeitschrift)
Englisch
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The development of railway signalling
Engineering Index Backfile | 1902
|Engineering Index Backfile | 1909
|Engineering Index Backfile | 1923
|Engineering Index Backfile | 1949
|Online Contents | 1998
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