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United States. Bureau of Plant Industry, Soils, and Agricultural Engineering
All books by United States. Bureau of Plant Industry, Soils, and Agricultural Engineering
(Displaying Books 21-34 of 34 in total)
Sound land classification rests on soil surveys
United States. Bureau of Plant Industry, Soils, and Agricultural Engineering
Summary of soil and water conservation and management research at the Red Plains Conservation Experiment Station, Guthrie, Oklahoma, 1953
Oklahoma Agricultural Experiment Station
The Plant disease situation
United States. Bureau of Plant Industry, Soils, and Agricultural Engineering