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Concentration tests on various base-metal ores /
by A.L. Engel.

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Main Author
Engel, Abraham L.
Language(s)
English
Published
[Pittsburgh, PA] : U.S. Dept. of the Interior, Bureau of Mines, 1952.
Subjects
Ore deposits > Ore deposits / Testing.
Physical Description
14 p. ; 27 cm.
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