49 resultados para Digital mapping -- Case studies -- Congresses
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Transportation Department, Office of University Research, Washington, D.C.
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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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Federal Highway Administration, Washington, D.C.
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Mode of access: Internet.
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"December 1980."
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"September 1998."
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Federal Highway Administration, Office of Safety and Traffic Operations Research and Development, McLean, Va.
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Prepared for Office of Research and Development, U.S. Environmental Protection Agency under grant 801500, program element 1HA098, ROAP/TASK 21 AKL-06.
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Mode of access: Internet.
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National Highway Traffic Safety Administration, Washington, D.C.
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Transportation Department, Office of Environmental Affairs, Washington, D.C.
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Federal Highway Administration, Washington, D.C.
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Federal Highway Administration, Washington, D.C.