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By: White, Richard AType: ArticleIn: American fern journalVolume: 58Series:Issue:Date: 1968Page Range: 108--118Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: White, Richard A - Turner, Melvin DType: ArticleIn: American fern journalVolume: 102Series:Issue:Date: 2012Page Range: 91--113Publication Info: [Washington, etc.] American Fern SocietySubjects: