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By: Gliessman, Stephen RType: ArticleIn: American fern journalVolume: 68Series:Issue:Date: 1978Page Range: 41--44Publication Info: [Washington, etc.] American Fern SocietySubjects:
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By: Gliessman, Stephen R - Muller, Cornelius H. (Cornelius Herman),Type: ArticleIn: Madroño; a West American journal of botanyVolume: 21Series:Issue:Date: 1972Page Range: 299--304Publication Info: Berkeley, California Botanical Society,Subjects: