167 resultados para improvements
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Mode of access: Internet.
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Federal Highway Administration, Office of Safety and Traffic Operations Research and Development, Washington, D.C.
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Mode of access: Internet.
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Includes reprints of Federal Register premerger notification; reporting and waiting period requirements, and Ninth annual report to Congress, Nov. 12, 1986.
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Shipping list no.: 89-555-P.
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Arizona Department of Transportation, Phoenix
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Transportation Systems Center, Cambridge, Mass.
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Federal Railroad Administration, Office of Policy and Program Development, Washington, D.C.
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Mode of access: Internet.
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"September 1990."
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Mode of access: Internet.
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Mode of access: Internet.