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2by Oman, Charles L.Subjects: “...Coal Geology Indiana....”
Published 1993
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3by Soller, D. R. (David R.)Subjects: “...Geology Indiana Maps....”
Published 1993
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4Published 1992Subjects: “...Dikes (Geology) Indiana Vincennes Region....”
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5Published 1987Subjects: “...Geology Indiana....”
Government Document Microform Book