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By: Nicolson, Dan HType: ArticleIn: Annals of the Missouri Botanical GardenVolume: 78Series:Issue:Date: 1991Page Range: 33--56Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-Subjects:
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By: Kennedy, Helen, - Nicolson, Dan HType: ArticleIn: Annals of the Missouri Botanical GardenVolume: 62Series:Issue:Date: 1975Page Range: 501--503Publication Info: St. Louis, Missouri Botanical Garden Press, 1914-Subjects:
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By: Nicolson, Dan HType: ArticleIn: Journal of the Arnold ArboretumVolume: 58Series:Issue: 4Date: 1977Page Range: 445--450Publication Info: Cambridge, Mass Arnold Arboretum, Harvard University [etc.] 1919-Subjects:
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By: Robinson, Harold E - Nicolson, Dan HType: ArticleIn: PhytologiaVolume: 32Series:Issue: 4Date: 1975Page Range: 327--330Publication Info: Bronx Park, New York H.A. Gleason and H.N. MoldenkeSubjects: