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By: Graves, Edward WillisType: ArticleIn: American fern journalVolume: 21Series:Issue:Date: 1931Page Range: 21--24Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Graves, Edward WillisType: ArticleIn: American fern journalVolume: 9Series:Issue:Date: 1919Page Range: 56--58Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Graves, Edward WillisType: ArticleIn: American fern journalVolume: 21Series:Issue:Date: 1931Page Range: 125--132Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Graves, Edward WillisType: ArticleIn: American fern journalVolume: 12Series:Issue:Date: 1922Page Range: 46--53Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Graves, Edward WillisType: ArticleIn: American fern journalVolume: 18Series:Issue:Date: 1928Page Range: 95--97Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Graves, Edward WillisType: ArticleIn: American fern journalVolume: 9Series:Issue:Date: 1919Page Range: 119--120Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Graves, Edward WillisType: ArticleIn: American fern journalVolume: 7Series:Issue:Date: 1917Page Range: 51--54Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Graves, Edward WillisType: ArticleIn: American fern journalVolume: 18Series:Issue:Date: 1928Page Range: 97--98Publication Info: [Washington, etc.] American Fern SocietySubjects: