Suggested Topics within your search.
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by Kennedy, Ray C.
[Harrisburg, PA] : [Springfield, VA : Pennsylvania Department of Transportation, Research and Special Studies ; Available through the National Technical Information Service, 1991
[Harrisburg, PA] : [Springfield, VA : Pennsylvania Department of Transportation, Research and Special Studies ; Available through the National Technical Information Service, 1991
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Government Document
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by Kostem, Celal N.
[Harrisburg, Pa.] : [Springfield, Va.] : Pennsylvania, Dept. of Transportation, Office of Research and Special Studies ; [Available from the National Technical Information Service], 1986
[Harrisburg, Pa.] : [Springfield, Va.] : Pennsylvania, Dept. of Transportation, Office of Research and Special Studies ; [Available from the National Technical Information Service], 1986
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Book