3 edition of Separation of Copper-Nickel Mattes From Duluth Gabbro Concentrates by Flotation and Magnetic Methods. found in the catalog.
Separation of Copper-Nickel Mattes From Duluth Gabbro Concentrates by Flotation and Magnetic Methods.
United States. Bureau of Mines.
|Series||Report of investigations (United States. Bureau of Mines) -- 8646|
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