?
12
Contributions to economic geology (short papers and prelimi..
United States congressional serial set ; serial set no. 8298;House document / 68th Congress, 1st session. House ; no. 48
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13
Contributions to economic geology (short papers and prelimi..
United States congressional serial set ; serial set no. 8120;House document / 67th Congress, 3rd session. House ; no. 457
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14
Mineral Resources of the United States, 1918, [by] G.F. Lou..
United States congressional serial set ; serial set no. 7714;House document / 66th Congress, 2nd session. House ; no. 814, pt. 1
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15
Mineral Resources of the United States, 1917, [by] H.D. McC..
United States congressional serial set ; serial set no. 7508;House document / 65th Congress, 3rd session. House ; no. 1864, pt. 1