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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Sánchez, Carlos
    Type: Article
    In: American fern journal
    Volume: 92
    Date: 2002
    Page Range: 20--22
    Publication Info: [Washington, etc.] American Fern Society
  2. By: Alvarez-Fuentes, Orlando - Sánchez, Carlos
    Type: Article
    In: American fern journal
    Volume: 95
    Date: 2005
    Page Range: 30--42
    Publication Info: [Washington, etc.] American Fern Society