http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Classification of train-miles, locomotive-miles, and car-miles for steam roads, prescribed by Interstate Commerce Commission in accordance with Section 20 of Act to Regulate Commerce
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Electronic reproduction. [Bethesda, Md.] : ProQuest, 2012. digital, PDF file. ProQuest U.S. Executive Branch Documents, 1910-1932. Mode of access: World Wide Web via ProQuest website.
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