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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Smith, Alan R., - Moran, Robbin Craig, - Bishop, L. Earl.
    Type: Article
    In: American fern journal
    Volume: 81
    Date: 1991
    Page Range: 76--88
    Publication Info: [Washington, etc.] American Fern Society
  2. By: Bishop, L. Earl.
    Type: Article
    In: American fern journal
    Volume: 79
    Date: 1989
    Page Range: 14--25
    Publication Info: [Washington, etc.] American Fern Society
  3. By: Bishop, L. Earl.
    Type: Article
    In: American fern journal
    Volume: 68
    Date: 1978
    Page Range: 76--94
    Publication Info: [Washington, etc.] American Fern Society
  4. By: Bishop, L. Earl.
    Type: Article
    In: American fern journal
    Volume: 79
    Date: 1989
    Page Range: 103--118
    Publication Info: [Washington, etc.] American Fern Society