Describes system adopted in Washington, D. C.


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    Title :

    Traffic control systems


    Additional title:

    Nat. Safety Council -- Proc.


    Contributors:

    Conference:

    National Safety Council -- Meeting ; 1925 Control



    Publication date :

    1925


    Size :

    6 pages


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English


    Keywords :


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