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9
Yearbook of the United States Department of Agriculture. 18..
United States congressional serial set ; serial set no. 3693;House document / 55th Congress, 2nd session. House ; no. 454
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10
Contributions to economic geology (short papers and prelimi..
United States congressional serial set ; serial set no. 7362;House document / 65th Congress, 2nd session. House ; no. 605