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1
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2Published 1962Subjects: “...Roads Economic aspects Pennsylvania Blairsville....”
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3by Maiolo, John R., 1938-Subjects: “...Roads Interchanges and intersections....”
Published 1967
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4by Sauerlender, O. H. (Owen Helwig)Subjects: “...Roads Interchanges and intersections....”
Published 1966
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5
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6