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4
Contributions to economic geology, 1905, [by] S.F. Emmons, ..
United States congressional serial set ; serial set no. 5016;House document / 59th Congress, 1st session. House ; no. 833
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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