An illustrated description of the De Wallace system, which gives automatically a warning to the engineer, and automatically stops the train. (1600 w.)


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    Title :

    Automatic train order signal, hocking valley ry


    Additional title:

    Ry Engng Rev



    Publication date :

    1902


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


    Hocking valley Ry

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