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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Paris, Cathy A - Wagner, F. S. (Florence Signaigo), - Wagner, Warren H.‏ (Warren Herbert),‏
    Type: Article
    In: American fern journal
    Volume: 79
    Date: 1989
    Page Range: 46--54
    Publication Info: [Washington, etc.] American Fern Society