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By: Darling, ThomasType: ArticleIn: American fern journalVolume: 52Series:Issue:Date: 1962Page Range: 137--148Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Darling, ThomasType: ArticleIn: American fern journalVolume: 54Series:Issue:Date: 1964Page Range: 197--205Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Darling, ThomasType: ArticleIn: American fern journalVolume: 56Series:Issue:Date: 1966Page Range: 49--55Publication Info: [Washington, etc.] American Fern SocietySubjects: