Leach-precipitation-flotation tests of a California copper-gold ore

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086 0 ‡aI 28.23:5342
100 1 ‡aEngel, A. L. ‡q(Abraham L.)
245 1 0 ‡aLeach-precipitation-flotation tests of a California copper-gold ore / ‡cby A.L. Engel and H.J. Heinen.
260 ‡a[Washington, D.C.] : ‡bU.S. Dept. of the Interior, Bureau of Mines, ‡c1957.
300 ‡a9 p. ; ‡c27 cm.
490 0 ‡aReport of investigations / United States Department of the Interior, Bureau of Mines ; ‡v5342
538 ‡aMode of access: Internet.
650 0 ‡aMine examination ‡zCalifornia.
650 0 ‡aCopper ores ‡zCalifornia ‡xTesting.
650 0 ‡aGold ores ‡zCalifornia ‡zTesting.
700 1 ‡aHeinen, H. J. ‡q(Harold J.)
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