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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hanson, A. A. (Angus Alexander),
    Edition: Rev. Nov. 1972.
    Publication info: Washington, D.C, Agricultural Research Service, U.S. Dept. of Agriculture, 1972
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  2. By: Hanson, A. A. (Angus Alexander),
    Edition: Rev. June 1965.
    Publication info: Washington, D.C, Agricultural Research Service, U.S. Dept. of Agriculture, 1965
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: United States. Agricultural Research Service. Crops Research Division. - Hanson, A. A. (Angus Alexander), - United States. Agricultural Research Service. Crops Research Division.
    Publication info: [Washington], 1958
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library