Simple treatment methods for sulfide gold and silver ores

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086	0	⊔	‡aI 28.23:4790
100	1	⊔	‡aEngel, A. L. ‡q(Abraham L.)
245	1	0	‡aSimple treatment methods for sulfide gold and silver ores / ‡cby A.L. Engel.
260	⊔	⊔	‡aWashington, D.C. : ‡bU.S. Dept. of the Interior, Bureau of Mines, ‡c1951.
300	⊔	⊔	‡a17 p. : ‡bill., tables ; ‡c27 cm.
490	0	⊔	‡aReport of investigations / United States Department of the Interior, Bureau of Mines ; ‡v4790
500	⊔	⊔	‡a"May 1951."
538	⊔	⊔	‡aMode of access: Internet.
650	⊔	0	‡aSilver ores ‡zNevada ‡xTreatment.
650	⊔	0	‡aSilver ores ‡zIdaho ‡xTreatment.
650	⊔	0	‡aSilver ores ‡zCalifornia ‡xTreatment.
650	⊔	0	‡aGold ores ‡zNevada ‡xTreatment.
650	⊔	0	‡aGold ores ‡zIdaho ‡xTreatment.
650	⊔	0	‡aGold ores ‡zCalifornia ‡xTreatment.
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