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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Rigg, George B. (George Burton) - Thompson, T. G.
    Type: Article
    In: Botanical gazette
    Volume: 68
    Issue: 5
    Date: 1919
    Page Range: 367--379
    Publication Info: Hanover, Ind, [publisher not identified], 1876-1991