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1. Beneficiation of potential platinum resources from southeastern Alaska / by D.C. Dahlin, A.R. Rule, L.L. Brown

by Dahlin, D. C. (David Clifford) | Rule, A. R | Brown, L. L.

Material type: book Book; Format: print Publisher: Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines, [1981]Availability: No items available

2. Characterization and beneficiation of phosphate-bearing rocks from northern Michigan / by L. L. Brown, A. R. Rule, C. B. Daellenbach

by Brown, L. L. (Lawrence L.) | Rule, A. R | Daellenbach, C. B.

Material type: book Book; Format: print Publisher: [Washington, D.C.?] : U.S. Dept. of the Interior, Bureau of Mines, [1981]Availability: No items available