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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Briggs, Lyman J. (Lyman James), - United States. Bureau of Plant Industry.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, Bureau of Plant Industry, 1908
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Tobacco  Tobacco root rot  
  2. By: Johnson, James, - Milton, Roy H.
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1919
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Disease and pest resistance  Tobacco  Tobacco root rot