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2
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
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3
Thirty-seventh annual report of the National Advisory Commi..
United States congressional serial set ; serial set no. 11595;Senate document / 82nd Congress, 2nd session. Senate ; no. 93
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4
Annual report of the Board of Regents of the Smithsonian In..
United States congressional serial set ; serial set no. 7759;House document / 66th Congress, 2nd session. House ; no. 710, pt. 1