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Estimate of Known Recoverable Reserves and the Preparation Characteristics of Coking Coal in Hamilton County, Tenn

出版	U.S. Department of the Interior, Bureau of Mines, 1956
URL	http://books.google.com.hk/books?id=3CvfTcWR5o4C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN