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    Title :

    Classic railroad signals : semaphores, searchlights, and towers


    Contributors:

    Publication date :

    2015


    Size :

    160 S.



    Type of media :

    Book


    Type of material :

    Print


    Language :

    English


    Classification :

    RVK:    ZO 5130



    Semaphores and interlocking railroad signal systems

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


    Light signals replacing semaphores

    Engineering Index Backfile | 1925


    Searchlights

    Online Contents | 1994



    G.N. Replaces Semaphores With color-light signals

    Engineering Index Backfile | 1928