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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Moyroud, Richard - Nauman, Clifton E
    Type: Article
    In: American fern journal
    Volume: 79
    Date: 1989
    Page Range: 155--155
    Publication Info: [Washington, etc.] American Fern Society
  2. By: Whittier, Dean P. - Moyroud, Richard
    Type: Article
    In: American fern journal
    Volume: 83
    Date: 1993
    Page Range: 41--46
    Publication Info: [Washington, etc.] American Fern Society