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Bituminous-coal Deposits in the Vicinity of Eska, Matanuska Valley Coal Field, Alaska

出版	U.S. Department of the Interior, Bureau of Mines, 1952
URL	http://books.google.com.hk/books?id=cXxbJu8ZTrgC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN