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    Title :

    From semaphores to semiconductors


    Published in:

    RAILWAY AGE ; 197 , 6 ; 87-90


    Publication date :

    1996-01-01


    Size :

    4 pages



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Classification :

    DDC:    385 / 625.1




    THE ADMIRALTY TELEGRAPHS AND SEMAPHORES

    Mead, Hilary P. | Taylor & Francis Verlag | 1938


    Electric lighting of semaphores

    Stilwell, W.H. | Engineering Index Backfile | 1936


    Light signals replacing semaphores

    Engineering Index Backfile | 1925


    Semaphores and interlocking railroad signal systems

    Hammond, C.H. | Engineering Index Backfile | 1890