Read before the Ry Signal Assn. Diagram, description of this system, its workings (700 w.) (No. 74485)
Mackenzie and Holland's improved sykes block signal, East Bengal State Railways
Ry Engng Rev
1906
Article (Journal)
English
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Signalling on the East Bengal State Railways
Engineering Index Backfile | 1906
|Sykes block railroad signal apparatus
Engineering Index Backfile | 1890
Engineering Index Backfile | 1929
|Engineering Index Backfile | 1962
|Online Contents | 1997