30 resultados para Railroad engineering.
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Plates printed on both sides.
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Vol. 25, no. 1-2 incorrectly numbered v. 24, no. 1-2.
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Mode of access: Internet.
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Master microform held by: DLC.
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Mode of access: Internet.
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Mode of access: Internet.
The development of an improved railroad-highway grade crossing risk factor. Executive summry report.
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Ohio Department of Transportation, Columbus
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Ohio Department of Transportation, Columbus
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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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Transportation Systems Center, Cambridge, Mass.
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Oct. 1, 1945.
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Title from caption.
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Mode of access: Internet.
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Bibliography: p. 99-119.