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7
Contributions to economic geology (short papers and prelimi..
United States congressional serial set ; serial set no. 9143;House document / 71st Congress, 1st session. House ; no. 118
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8
Oil and gas fields of the Lost Soldier-Ferris district, Wyo..
United States congressional serial set ; serial set no. 8304;House document / 68th Congress, 1st session. House ; no. 327