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By: Johnson, William P - Rohwer, Frank CType: ArticleIn: The Wilson bulletinVolume: 110Series:Issue: 3Date: 1998Page Range: 311--315Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-Subjects:
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By: Gastony, Gerald Joseph - Johnson, William PType: ArticleIn: American fern journalVolume: 91Series:Issue:Date: 2001Page Range: 197--213Publication Info: [Washington, etc.] American Fern SocietySubjects: