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Nacogdoches, Tex: B.L. Cunningham, 2000
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Southern Appalachian Botanical Club, 1977
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JSTOR, 1975
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Southwestern Association of Naturalists, 1975
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Brigham Young University, 1967
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Wiley, 1964
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Duke University Press, 1964
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JSTOR, 1967
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University of Notre Dame, 1967
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William F. Mahler, 1987
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Southern Appalachian Botanical Club, 1993
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William F. Mahler, 1990
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Wm. F. Mahler, 1982
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JSTOR, 1977
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Southwestern Association of Naturalists, 1977
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Brigham Young University, 1968
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JSTOR, 1964
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University of Notre Dame, 1964
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Wm. F. Mahler, 1983
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William F. Mahler, 1980