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1
Copper in the United States.
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1983

Government Document Journal
2
Gold and silver in ...
Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, 1995

Government Document Journal
3
Antimony.

Government Document Journal
4
Feldspar in ... /

Government Document Journal
5
Crushed stone and sand and gravel in the ... /
Washington, DC : U.S. Dept. of the Interior, Bureau of Mines, 1989

Government Document Journal
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