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By: Sheffield, E - Cutter, Elizabeth Graham - Douglas, G. E. - Lindsay, SType: ArticleIn: American fern journalVolume: 81Series:Issue:Date: 1991Page Range: 128--133Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Sheffield, E - Douglas, G. E. - Hearne, S J - Huxham, S - Wynn, J. M.Type: ArticleIn: American fern journalVolume: 91Series:Issue:Date: 2001Page Range: 179--186Publication Info: [Washington, etc.] American Fern SocietySubjects: