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Geologic Factors Related to Block Caving at San Manuel Copper Mine, Pinal County, Ariz

其他書名	Progress Report, April 1956 - March 1958
出版	U.S. Department of the Interior, Bureau of Mines, 1960
URL	http://books.google.com.hk/books?id=gGe8zX4Kza0C&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN