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Assaying ores, concentrates, and bullion :revision of Information Circular 7695

Published Year

• 1970-1979 (1)

Subject

• Ores--United States--Analysis (1)
• Precious metals--United States--Analysis (1)
• Testing laboratories--United States (1)

Author

• Broadhead, K. G. (1) *
• Heady, Howard H. (1)

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