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By: Pember, F TType: ArticleIn: American fern journalVolume: 1Series:Issue:Date: 1910Page Range: 17--19Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Pember, F TType: ArticleIn: American fern journalVolume: 1Series:Issue:Date: 1911Page Range: 45--48Publication Info: [Washington, etc.] American Fern SocietySubjects: