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Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1929)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1931)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1934)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1933)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1945)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1948)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1956)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1961)

Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1965)

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Transactions of the Illinois State Academy of Science - Illinois State Academy of Science. (Illinois State Academy of Science [etc.], 1973)

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Unsere Freiland-Nadelhölzer; Anzucht, Pflege und Verwendung aller bekannten in Mitteleuropa im freien Kulturfähigen Nadelhölzer mit Einschluss von Ginkgo und Ephedra - Appel, Otto, 1867 -1952 (Hölder-Pichler-Tempsky, 1923)

Untersuchungen über die anatomische Structur der Gramineenblätter in ihrem Verhältniss zu Standort und Klima, mit Versuche einer auf dieselbe begründeten Gruppirung der Gramineen - Güntz, Max, 1861 - (Rossberg, 1886)

Use of water by native vegetatation - Blaney, Harry French, 1892 -1976 (California State Printing Office, 1942)

The Ustilagineae, or smuts, of Connecticut - Clinton, G. P. (George Perkins), 1867 -1937 (Hartford Press, The Case, Lockwood & Brainard Co, 1905)

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Van Saun & Muzzy's annual descriptive catalogue of seeds, 1878 : for the vegetable garden, for the flower garden, for the lawn, for the farm, for the nursery : the largest collection to be found in the world, every standard and improved variety, also tested novelties both of domestic and foreign origin, that are suited to the climate of the United States - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Van Saun & Muzzy, 1878)

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Vascular plants of Maryland, USA : a comprehensive account of the state's botanical diversity - Smithsonian Institution (Smithsonian Scholarly Press, 2021)

Vascular plants of the Black Hills of South Dakota and adjacent Wyoming - Thilenius, John F. (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1971)

Vascular plants of the Sangamon River basin; annotated checklist and ecological summary - Bell, David T. (University of Illinois at Urbana-Champaign, College of Agriculture, 1974)

Die Vegetation der Erde :Sammlung pflanzengeographischer Monographien - Engler, Adolf, 1844 -1930 (W. Engelmann, 1896)