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9
Forty-first annual report of the National Advisory Committe..
United States congressional serial set ; serial set no. 11917;Senate document / 84th Congress, 2nd session. Senate ; no. 90
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10
Thirty-ninth annual report of the National Advisory Committ..
United States congressional serial set ; serial set no. 11762;Senate document / 83rd Congress, 2nd session. Senate ; no. 79
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11
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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12
Climate and man. Yearbook of Agriculture, 1941
United States congressional serial set ; serial set no. 10616;House document / 77th Congress, 1st session. House ; no. 27
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15
Albrecht-Thaer-Archiv
Arbeiten aus den Gebieten Bodenkunde, Pflanzenernährung, A...
Albrecht-Thaer-Archiv ; Band 11, Heft 9