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4
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
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15
Food and life. Yearbook of Agriculture, 1939
United States congressional serial set ; serial set no. 10369;House document / 76th Congress, 1st session. House ; no. 28