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Open-pit Copper Mining Methods, Morenci Branch, Phelps Dodge Corp., Greenlee County, Ariz
W. R. Hardwick
出版U.S. Department of the Interior, Bureau of Mines, 1959
URLhttp://books.google.com.hk/books?id=d3K9lwGFcMgC&hl=&source=gbs_api
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