15 resultados para Railway Level Crossings
em University of Michigan
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Federal Highway Administration, Washington, D.C.
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Mode of access: Internet.
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Federal Railroad Administration, Office of Safety, Washington, D.C.
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Texas Department of Transportation, Austin
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Federal Railroad Administration, Office of Policy and Program Development, Washington, D.C.
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Federal Highway Administration, Office of Research, Development and Technology, Washington, D.C.
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Federal Highway Administration, Office of Research and Development, Washington, D.C.
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Mode of access: Internet.
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Federal Railroad Administration, Office of Policy and Program Development, Washington, D.C.
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Transportation Systems Center, Cambridge, Mass.
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Federal Railroad Administration, Office of Research and Development, Washington, D.C.
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Transportation Systems Center, Cambridge, Mass.
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Federal Highway Administration, Offices of Research and Development, Washington, D.C.
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Transportation Systems Center, Cambridge, Mass.
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"Originally written as a series of articles for ʻThe Railway Newsʾ, in which they appeared at various periods between the years 1911 and 1914."--Pref.