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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Wedel, H. von - Woodson, Robert E. (Robert Everard), - Schery, Robert W.
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 29
    Date: 1942
    Page Range: 317--379
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-
  2. By: Wedel, H. von - Woodson, Robert E. (Robert Everard), - Schery, Robert W.
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 30
    Date: 1943
    Page Range: 83--96
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-