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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Johnson, George Thomas
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 27
    Date: 1940
    Page Range: 1--50
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-
  2. By: Dodge, Carroll W. (Carroll William), - Dodge, Bertha Sanford - Johnson, George Thomas
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 28
    Date: 1941
    Page Range: 1--30
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-
  3. By: Johnson, George Thomas
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 25
    Date: 1938
    Page Range: 729--768
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-