Processing chalcopyrite concentrates by a nitrogen roast-hydrometallurgical technique

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245 0 0 ‡aProcessing chalcopyrite concentrates by a nitrogen roast-hydrometallurgical technique / ‡cby R.C. Gabler ... [et al.].
260 ‡a[Pittsburgh] : ‡bU.S. Dept. of the Interior, Bureau of Mines, ‡c[1975].
300 ‡a18 p. : ‡bdiagr., graphs ; ‡c27 cm.
490 0 ‡aReport of investigations - Bureau of Mines ; ‡v8067
500 ‡aTables.
504 ‡aIncludes bibliographical references.
538 ‡aMode of access: Internet.
650 0 ‡aChalcopyrite.
700 1 ‡aCampbell, W. J.
700 1 ‡aBrown, R. E.
700 1 ‡aDunning, B. W.
700 1 ‡aGabler, Robert C.
710 1 ‡aUnited States. ‡bBureau of Mines.
740 0 0 ‡aNitrogen roast-hydrometallurgical technique.
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