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By: Ackerman, William L. - United States. Bureau of Plant Industry, Soils, and Agricultural Engineering.
Publication info: [Washington, D.C.] :Bureau of Plant Industry, Soils and Agricultural Engineering, U.S. Department of Agriculture,[1958]
Holding Institution: U.S. Department of Agriculture, National Agricultural Library
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By: Ackerman, William L. - Joley, Lloyd E. - Halsey, Dean. - United States. Bureau of Plant Industry, Soils, and Agricultural Engineering.
Publication info: [Washington, D.C.] :Bureau of Plant Industry, Soils and Agricultural Engineering, U.S. Department of Agriculture,[1955]
Holding Institution: U.S. Department of Agriculture, National Agricultural Library
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By: Ackerman, William L. - United States. Bureau of Plant Industry, Soils, and Agricultural Engineering.
Publication info: Glenn Dale, Md. :U.S.Plant introduction Station, New Crops Research Branch, Crops Research Division, Agricultural Research Service, United States Department of Agriculture,[1962]
Holding Institution: U.S. Department of Agriculture, National Agricultural Library
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By: Ackerman, William L.
Publication info: Glenn Dale, Md. :U.S. Plant Introduction Station, New Crops Research Branch, Crops Research Division, Agricultural Research Service, Dept. of Agriculture,1963.
Holding Institution: U.S. Department of Agriculture, National Agricultural Library
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By: Ackerman, William L. - United States. Bureau of Plant Industry, Soils, and Agricultural Engineering.
Publication info: [Washington, D.C.] :Bureau of Plant Industry, Soils and Agricultural Engineering, U.S. Department of Agriculture,[1957]
Holding Institution: U.S. Department of Agriculture, National Agricultural Library