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By: Nayar, B KType: ArticleIn: American fern journalVolume: 58Series:Issue:Date: 1968Page Range: 19--29Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Nayar, B KType: ArticleIn: American fern journalVolume: 50Series:Issue:Date: 1960Page Range: 194--203Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Nayar, B K - Chandra, PrakashType: ArticleIn: American fern journalVolume: 54Series:Issue:Date: 1964Page Range: 9--19Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Nayar, B K - Bajpai, NishaType: ArticleIn: American fern journalVolume: 60Series:Issue:Date: 1970Page Range: 107--118Publication Info: [Washington, etc.] American Fern SocietySubjects: