Notes on improvements made in system since original installation.


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    Title :

    The automatic block system of the north-south underground railway of Paris


    Additional title:

    Das automatische Blocksystem der Untergrund-bahn "Nord-Zud" in Paris


    Contributors:
    Tobler, A. (author)

    Published in:

    Publication date :

    1921


    Size :

    4 pages


    Remarks:

    5 Figs.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    German




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