Report of the Gen. Mgr's Com. on the Penn. R. R., appointed to determine by experiment the necessary depth. (From Bul. 136 of Am. Ry. Engng. Assn.) (3500 w.) (No. 25297)


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    Title :

    Depth of stone Ballast


    Additional title:

    Ry Age Gaz


    Published in:

    Publication date :

    1911


    Remarks:

    Ills.


    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English





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