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by Van Tassel, Erica L.
University Park, PA : Pennsylvania State University, 1999
Subjects:
“...Roads Specifications Pennsylvania....”University Park, PA : Pennsylvania State University, 1999
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Government Document
Book
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by Rothrock, Thomas P.
Harrisburg, Pa. : [Springfield, Va.] : PA Department of Transportation, Office of Research & Special Studies ; Available through the National Technical Information Service, 1990
Subjects:
“...Roads Specifications Pennsylvania....”Harrisburg, Pa. : [Springfield, Va.] : PA Department of Transportation, Office of Research & Special Studies ; Available through the National Technical Information Service, 1990
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Government Document
Book
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