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2by Armstrong, Augustus K.Subjects: “...Paleontology Mississippian....”
Published 1972
Government Document Book -
3by Armstrong, Augustus K.Subjects: “...Paleontology Mississippian....”
Published 1970
Government Document Book -
4by Armstrong, Augustus K.Subjects: “...Paleontology Mississippian....”
Published 1970
Government Document Book -
5by Mamet, Bernard L.Subjects: “...Paleontology Carboniferous....”
Published 1993
Government Document Book -
6by Armstrong, Augustus K.Subjects: “...Paleontology Mississippian. http://id.loc.gov/authorities/subjects/sh85097133...”
Published 1970
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7by Armstrong, Augustus K.Subjects: “...Paleontology Pennsylvanian....”
Published 1972
Government Document Book -
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