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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Willis, Tracy E - Nester-Hudson, Joan E
    Type: Article
    In: American fern journal
    Volume: 96
    Date: 2006
    Page Range: 127--133
    Publication Info: [Washington, etc.] American Fern Society
  2. By: Nester-Hudson, Joan E - Ladas, Carol - Mcclurd, Amy
    Type: Article
    In: American fern journal
    Volume: 87
    Date: 1997
    Page Range: 131--142
    Publication Info: [Washington, etc.] American Fern Society