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6
Yearbook of the United States Department of Agriculture, 19..
United States congressional serial set ; serial set no. 7190;House document / 64th Congress, 2nd session. House ; no. 1487
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15
Yearbook of Agriculture, 1943-1947. Science in farming
United States congressional serial set ; serial set no. 11077;House document / 79th Congress, 2nd session. House ; no. 708