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Analysis of Coal Samples from the Licking River District, Kentucky (Elliott, Magoffin, Morgan and Wolfe Counties and Parts of Menifee, Powell and Rowan Counties)

James C. Currens

出版	Kentucky Geological Survey, University of Kentucky, 1987
URL	http://books.google.com.hk/books?id=YJ5RAQAAIAAJ&hl=&source=gbs_api