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  1. The brown root rot of tobacco and other plants /
    By: Johnson, James, - Murwin, Herbert Franklin, - Slagg, C. M.
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1926.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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  2. The influence of heated soils on seed germination and soil [read plant] growth,
    By: Johnson, James,
    Publication info: Baltimore,1919
    Contributed by: Library of Congress
    BHL Collections: Library of Congress
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  3. Tobacco diseases and their control /
    By: Johnson, James,
    Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1924.
    Contributed by: U.S. Department of Agriculture, National Agricultural Library
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