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A Microscopic Study of Coniferous Wood in Relation to Its Strength Properties
Vol 26, Page 1, Date 1939
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New or Otherwise Noteworthy Apocynaceae of Tropical America. VI
Vol 26, Page 95, Date 1939
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Studies on Variation in Gibberella Saubinetii (Mont.) Sacc. (Fusarium graminearum Schwabe)
Vol 26, Page 99, Date 1939
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Tree Temperatures and Thermostasy
Vol 26, Page 165, Date 1939
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New or Otherwise Noteworthy Apocynaceae of Tropical America. VII
Vol 26, Page 257, Date 1939
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Two New Asclepiads from the Western United States
Vol 26, Page 261, Date 1939
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Contributions Toward a Flora of Panama. III. Collections During the Summer of 1938, Chiefly by R. E. Woodson, Jr., P. H. Allen, and R. J. Seibert
Vol 26, Page 265, Date 1939
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The Genetic Coefficients of Specific Difference
Vol 26, Page 325, Date 1939
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Morphogenetic Differences Between Nicotiana alata and N. Langsdorffii as Indicated by Their Response to Indoleacetic Acid
Vol 26, Page 349, Date 1939
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Monograph of the North American Species of the Genus Ephedra
Vol 26, Page 373, Date 1939