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7
Report on progress of investigations of mineral resources o..
United States congressional serial set ; serial set no. 4864;House document / 58th Congress, 3rd session. House ; no. 400
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8
Contributions to economic geology, 1903. S. F. Emmons, C.W...
United States congressional serial set ; serial set no. 4685;House document / 58th Congress, 2nd session. House ; no. 677