United States. Bureau of Mines. (1939). Electrometallurgical investigations, recovery of nickel, copper, and precious metals from domestic ores by combined electrothermal and electrolytic method. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Mines. Electrometallurgical Investigations, Recovery of Nickel, Copper, and Precious Metals from Domestic Ores by Combined Electrothermal and Electrolytic Method. [Washington]: [s.n.], 1939.
MLA (9th ed.) CitationUnited States. Bureau of Mines. Electrometallurgical Investigations, Recovery of Nickel, Copper, and Precious Metals from Domestic Ores by Combined Electrothermal and Electrolytic Method. [s.n.], 1939.
Warning: These citations may not always be 100% accurate.