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Manganese Investigations - Metallurgical Division - 12: Ore-dressing Studies of Manganese Ores - Concentration of Manganese-bearing Ore from the Stange Mine, Bland County, Virginia

United States. Bureau of Mines

出版	1942
URL	http://books.google.com.hk/books?id=uQ1DMQAACAAJ&hl=&source=gbs_api