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Mining Practice at the Edwards Mine of the St. Joseph Lead Co., St. Lawrence County, N.Y.

John Ballantine Knaebel

出版	U.S. Department of the Interior, Bureau of Mines, 1932
URL	http://books.google.com.hk/books?id=oH9UAHkPjwMC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN