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1Subjects: “...Geology, Stratigraphic Carboniferous....”
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2Published 1989Subjects: “...Geology, Stratigraphic Quaternary Congresses....”
Government Document Book -
3Published 1989Subjects: “...Geology, Stratigraphic Quaternary Congresses. http://id.loc.gov/authorities/subjects/sh2008105176...”
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