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Zinc-ore Mining and Milling Methods, Piquette Mining and Milling Co., Tennyson, Wis
Wesley A. GroshT. A. Evans
出版U.S. Department of the Interior, Bureau of Mines, 1959
URLhttp://books.google.com.hk/books?id=qpZmLz7CDFYC&hl=&source=gbs_api
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