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The classification of flowering plants - Rendle, A. B. (Alfred Barton), 1865 -1938 (University press, 1904)

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A college text-book of Botany, being an enlargement of the author's "Elementary Botany." - Atkinson, George Francis, 1854 -1918 (Holt, 1905)

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Colombia, Perú : bajo Putumayo-Yaguas-Cotuhé - Field Museum of Natural History. (Field Museum, Keller Science Action Center, 2021)

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Comparative anatomy of the vegetative organs of the phanerogams and ferns - Bary, A. de (Anton), 1831 -1888 (Clarendon Press, 1884)

Comparative external pollen ultrastructure of the Araceae and putatively related taxa - Grayum, Michael Howard, 1949 - (Missouri Botanical Garden, 1992)

Comparative study of todies (Todidae), with emphasis on the Puerto Rican tody, Todus mexicanus - Kepler, Angela Kay, 1943 - (Nuttall Ornithological Club, 1977)

A compendium of general botany - Schneider, Albert, 1863 -1928 (Wiley, 1896)

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Congrès international d'entomologie : [proceedings] (Hayez, 2008)

Congrès international d'entomologie : [proceedings] (Hayez, 2016)

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Der Conservator oder praktische Anleitung, Naturalien aller Reiche zu sammeln, zu conserviren und für wissenschaftliche Zwecke, wie auch zum Vergnügen aufzustellen : Ein Hilfsbuch zum Selbstunterricht für Lehrer, Landprediger, Hauslehrer und alle Diejenigen, welche Naturaliensammlungen zweckmässig, ohne unnöthigen Zeit- und Kosten-Aufwand, anlegen wollen : nach eigenen Erfahrungen bearbeitet und mit Tabellen zur leichteren Bestimmung der Mineralien und Pflanzen [etc.] versehen - Streubel, A. V. (August Vollrath) (Verlag von Ferdinand Rubach, 1845)

Conspectus regni vegetabilis per gradus naturales evoluti. Tentamen - Reichenbach, H. G. Ludwig (Heinrich Gottlieb Ludwig), 1793 -1879 (apud C. Cnobloch, 1828)

Conspectus regni vegetabilis : secundum characteres morphologicos praesertim carpicos in classes ordines et familias digesti, adjectis exemplis nominibusque plantarum usui medico technico et oeconomico inservientium = Uebersicht der Classen, Ordnungen und Familien des Gewächsreiches nach morphologischen Grundsätzen, unter besonderer Rücksicht auf den Fruchtbau, mit Angabe von Beispielen und von den in der Medicin, Technik und Oekonomie besonderswichtigen Pflanzen - Martius, Karl Friedrich Philipp von, 1794 -1868 (Joh. Leonhard Schrag, 1835)

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A contribution to the botany of the Isle of Pines, Cuba, based upon the specimens of plants from that island contained in the herbarium of the Carnegie Museum under date of October, 1916 - Jennings, Otto E. (Otto Emery), 1877 -1964 (1917)

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Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1909)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1929)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1930)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1931)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1932)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1933)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1934)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1935)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1936)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1939)