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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Richardson, P Mick - Palta, Harinder K
    Type: Article
    In: American fern journal
    Volume: 73
    Date: 1983
    Page Range: 43--45
    Publication Info: [Washington, etc.] American Fern Society
  2. By: Richardson, P Mick - Lorenz-Liburnau, Eugenia
    Type: Article
    In: American fern journal
    Volume: 72
    Date: 1982
    Page Range: 103--106
    Publication Info: [Washington, etc.] American Fern Society
  3. By: Richardson, P Mick - Tan, Kit
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 77
    Date: 1990
    Page Range: 864
    Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-