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2by Luppens, James A. (James Alan), 1946-Subjects: “...Coal Geology Wyoming Gillette....”
Published 2008
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5Published 2012Subjects: “...Coal leases Environmental aspects Wyoming Campbell County....”
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6Published 2013Subjects: “...Coal leases Environmental aspects Wyoming Campbell County....”
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7Published 2013Subjects: “...Coal mines and mining Wyoming. http://id.loc.gov/authorities/subjects/sh86003261...”
Electronic resource (PDF)
Government Document eBook