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Studies in the Genus Hevea I: I. The differentiation of Hevea microphylla and H. minor
Vol 13, Iss 1, Page 1, Date 1947-09-08
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An Erroneous Record of Hevea in Colombia
Vol 13, Iss 1, Page 12, Date 1947-09-08
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Commentaries on Spiranthes, I: I. Spiranthes tuberosa sensu Fernald
Vol 13, Iss 2, Page 17, Date 1947-11-19
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Chicha, A Native South American Beer
Vol 13, Iss 3, Page 33, Date 1947-12-29
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Vascular Anatomy of Orchid Flowers
Vol 13, Iss 4, Page 61, Date 1948-07-27
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Studies in the Genus Hevea II: the rediscovery of Hevea rigidifolia
Vol 13, Iss 5, Page 97, Date 1948-10-20
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Notes on Orchids of the American Tropics
Vol 13, Iss 6, Page 133, Date 1948-11-24
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Maize Granaries in Mexico
Vol 13, Iss 7, Page 153, Date 1949-01-17
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New Archaeological Evidence on Evolution in Maize
Vol 13, Iss 8, Page 213, Date 1949-03-04
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Plantae Austro-Americanae V: de plantis principaliter colombiae observationes
Vol 13, Iss 9, Page 261, Date 1949-04-18
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Plantae Colombianae XI: De Plantis Principaliter Colombiae Vallis Amazonicae Observationes
Vol 13, Iss 10, Page 293, Date 1949-06-24
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New Concepts in Styrax from Eastern Colombia
Vol 13, Iss 10, Page 325, Date 1949-06-24