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Catalogue of the library of the Arnold Arboretum of Harvard University - Sargent, Charles Sprague, 1841 -1927 (Printed at the Cosmos Press, 1914)

Catalogue of the phanerogams and ferns of Licking County, Ohio - Jones, Herbert Lyon, 1866 -1898 (Press of Granville Times, 1892)

Catalogue of the plants of the state of Illinois - Lapham, Increase Allen, 1811 -1875 (s.n, 1800)

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Catalogue of the type specimens of Microlepidoptera in the British Museum (Natural History) described by Edward Meyrick - Clarke, J. F. Gates (John Frederick Gates), 1905 -1990 (British Museum (Natural History), 1958)

Catalogue of the vascular plants of Ecuador = Catálogo de las plantas vasculares del Ecuador - González, Amada Pedroni. (Missouri Botanical Garden Press, 1999)

Catalogus florae Ludovicianae - Riddell, John Leonard, 1807 -1867 (s.n, 1852)

Catalogus plantarum cubensium exhibens collectionem Wrightianam aliasque minores ex insula Cuba missas - Grisebach, A. (August), 1814 -1879 (Apud Gulielmum Engelmann, 1866)

Catalogus plantarum quae in horto Aksakoviano coluntur / Katalog rastenii, nakhodiashchikhsia v sadu Nikolaia Timofeevicha Aksakova v Penzenskoi gubernii / privel v poriadok E. Regel - Regel, E. (Eduard), 1815 -1892 (V tipografii Ministerstva vnytrennikh giel, 1860)

Catalogus plantarum quae in Horto Botanico Bogoriensi coluntur - Kebun Raya Indonesia. (Lands-Drukkerij, 1866)

Catalogus seminum in horto botanico Matritensi anno ... collectorum - Real Jardín Botánico (Spain) ([Real Jardín Botánico], 1926)

Catalogus seminum in Horto Botanico Universitatis Valentinæ anno ... collectorum - Universidad de Valencia. Jardin Botanico. (Hijo F. Vives Mora, 1925)

Catalogus seminum in Horto Botanico Universitatis Valentinæ anno ... collectorum - Universidad de Valencia. Jardin Botanico. (Hijo F. Vives Mora, 1927)

Catalogus seminum in Horto Botanico Universitatis Valentinæ anno ... collectorum - Universidad de Valencia. Jardin Botanico. (Hijo F. Vives Mora, 1928)

Catalogus seminum in Horto Botanico Universitatis Valentinæ anno ... collectorum - Universidad de Valencia. Jardin Botanico. (Hijo F. Vives Mora, 1929)

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Check-list of the species of fishes known from the Philippine Archipelago - Jordan, David Starr, 1851 -1931 (Bureau of printing, 1919)

Check-list of the species of fishes known from the Philippine Archipelago - Jordan, David Starr, 1851 -1931 (Bureau of printing, 1917)

Check-list of the species of fishes known from the Philippine Archipelago - Jordan, David Starr, 1851 -1931 (Bureau of printing, 1918)

Check-list of the species of fishes known from the Philippine Archipelago - Jordan, David Starr, 1851 -1931 (Bureau of printing, 1910)

A check list of the vascular plants of Nicaragua : based largely on collections in Nicaragua made by the author and companions, 1968-1976 - Seymour, Frank Conkling. (H.N. Moldenke and A.L. Moldenke, 1980)

A checklist of New York State plants - Mitchell, Richard S., 1938 - (University of the State of New York, State Education Dept, 1986)

Checklist of the vascular plants of Alabama from the John D. Freeman Herbarium and the University of Alabama Herbarium - Morton, Cynthia M. (Carnegie Museum of Natural History, 2002)

Chloris platensis argentina - Hicken, Cristóbal M. (Cristóbal María), 1875 -1933 (J.A. Alsina, 1910)

Class book of botany : being an introduction to the study of the vegetable kingdom - Balfour, John Hutton, 1808 -1884 (Adam and Charles Black, 1854)

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

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

Clavis, classium, ordinum et familiarum atque index generum regni vegetabilis = Diagnostische Uebersichtstafeln des natürlichen Pflanzensystems : nebst vollständigem Gattungsregister - Perleb, Karl Julius, 1794 -1845 (A. Emmerling, 1838)

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Collection number book, beginning with no. 11000 - Fosberg, F. Raymond (Francis Raymond), 1908 -1993 (1934)

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Colombia: La Lindosa, Capricho, Cerritos - Field Museum of Natural History. (The Field Museum, 2018)

Commentatio de myrsinaceis archipelagi Indici - Scheffer, Rudolph H. C. C. 1844 -1880 (apud G. G. Brugman, 1867)

Common Florida angiosperm families - Zomlefer, Wendy B., 1954 - (Biological Illustrations, 1900)

Common medicinal plants of Darjeeling and the Sikkim Himalayas - Biswas, Kalipada, 1899 - (Supt., Govt. Print., West Bengal Govt. Press, 1956)

The commonly occurring wild plants of Canada : a flora for the use of beginners - Spotton, H. B. (Henry Byron), 1844 -1933 (Gage, 1897)

Compagnie du Kasai : mission permanente d'études scientifiques - Wildeman, E. de (Emile), 1866 -1947 (Impr. A. Lesigne, 1910)

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

Compendio della flora italiana; ossia, Manuale per la determinazione delle piante che trovansi selvatiche od inselvatichite nell'Italia e nelle isole adiacenti - Arcangeli, G. (Giovanni), 1840 -1921 (E. Loescher, 1882)

Compendium of natural features information - Maryland. State Planning Dept. (The Department, 1975)

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Compositae newsletter - Naturhistoriska riksmuseet (Sweden). Dept. of Phanerogamic Botany. (Dept. of Botany, Ohio State University, 2005)

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Congrès international d'entomologie : [proceedings] (Hayez, 1988)

Congrès international d'entomologie : [proceedings] (Hayez, 2000)

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

The Conservation Atlas of Tropical Forests: the Americas (1996)

Conservation of plant genes II : utilization of ancient and modern DNA - Adams, Robert P. (Missouri Botanical Garden, 1994)

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)