974 resultados para interim certification
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Mode of access: Internet.
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Mode of access: Internet.
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Includes bibliographical references
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Mode of access: Internet.
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Pennsylvania Department of Transportation, Bureau of Materials, Testing and Research, Harrisburg
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Turner-Fairbank Highway Research Center, Office of Safety Research and Development, McLean, Va.
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DeKalb County School System, Decatur, Ga.
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Texas State Department of Highways and Public Transportation, Transportation Planning Division, Austin
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Federal Highway Administration, Environmental Division, Washington, D.C.
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"A current report on solid waste management"--Cover.
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"January 1980."
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Item 535
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Transportation Systems Center, Cambridge, Mass.
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Transportation Systems Center, Cambridge, Mass.
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Transportation Systems Center, Cambridge, Mass.