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Subsurface Geology and Coal Resources of the Pennsylvanian System in De Witt, McLean, and Piatt Counties, Illinois

C. Prasada RaoHarold Bowen WillmanJames Watson BaxterJerry Alvin LinebackKenneth Edward CleggMarshall L. SilverWillis L. BuschHarold Jay Gluskoter

出版	Illinois State Geological Survey, 1972
URL	http://books.google.com.hk/books?id=CLHDEhsGvPQC&hl=&source=gbs_api