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1
Microscopic determination of the ore minerals, by M.N. Shor..
United States congressional serial set ; serial set no. 9406;House document / 71st Congress, 3rd session. House ; no. 610
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2
Mineral resources of Alaska. Report on progress of investig..
United States congressional serial set ; serial set no. 8604;House document / 69th Congress, 1st session. House ; no. 88