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121Published 2008Subjects: “...Highway-railroad grade crossings Congresses....”
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122Published 1998Subjects: “...Highway-railroad grade crossings United States....”
Book -
123
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124by Richards, Hoy A.Subjects: “...Highway-railroad grade crossings United States Design and construction....”
Published 1998
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125by Hurlebaus, StefanSubjects: “...Railroad rails Defects. http://id.loc.gov/authorities/subjects/sh85111008...”
Published 2011
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