Brief illustrated description of the "block system" and the latest system which is a combination of the manual and automatic. (1000 w.)


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    Title :

    Railway signals


    Additional title:

    Sci Am


    Contributors:

    Published in:

    Publication date :

    1899


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English


    Keywords :


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