A contribution to the history of the fresh-water algœ of North America - Wood, H. C. (Horatio C.), 1841 -1920 (Smithsonian institution, 1872)

Contributions à la flore de la Chine, comprenant les algues marines récoltées en Chine et les florules de Shang-hai, Tché-foû et Tien-tsin - Debeaux, Jean Odon, 1826 -1910 (F. Savy, 1879)

Contributions from the Botanical Laboratory - University of Pennsylvania. Botanical Laboratory. (University of Pennsylvania Press, 1892)

Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania - University of Pennsylvania. Botanical Laboratory. ([s.n, 1934)

Contributions from the Botanical Laboratory of the University of Pennsylvania - University of Pennsylvania. Botanical Laboratory. (University of Pennsylvania Press, 1892)

Contributions from the Botanical Laboratory of the University of Pennsylvania - University of Pennsylvania. Botanical Laboratory. (University of Pennsylvania Press, 1898)

Contributions from the Hull Botanical Laboratory - Hull Botanical Laboratory. (University of Chicago Press, 1915)

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Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1890)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1903)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1905)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1931)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 1957)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 2003)

Contributions from the United States National Herbarium - United States. National Herbarium. (Smithsonian Institution Press, 2007)

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Contributions to the flora of Iowa; a catalogue of the phaenogamous plants - Arthur, Joseph Charles, 1850 -1942 (Intelligencer Book Print, 1876)

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Cooperative economic insect report - United States. Bureau of Entomology; Plant Quarantine. (Plant Protection and Quarantine Programs Animal and Plant Health Service, 1974)

Cooperative economic insect report - United States. Bureau of Entomology; Plant Quarantine. (Plant Protection and Quarantine Programs Animal and Plant Health Service, 1975)

Cooperative plant pest report - United States. Animal; Plant Health Inspection Service. (The Service, 1976)

Corn breeding - Richey, Frederick D. (Frederick David), 1884 - (U.S. Dept. of Agriculture, 1927)

The corn crops: a discussion of maize, kafirs, and sorghums as grown in the United States and Canada - Montgomery, E. G. (Edward Gerrard), 1878 - (The Macmillan company, 1913)

The corn crops: a discussion of maize, kafirs, and sorghums as grown in the United States and Canada - Montgomery, E. G. (Edward Gerrard), 1878 - (Macmillan, 1920)

Corn culture - Potter, Harry B. (Correspondence Coll. of Agric, 1910)

Corn growing in Louisiana - Roy, V. L. (Victor Leander), 1871 -1968 (Ramires & Jones, 1911)

Corn; growing, judging, breeding, feeding, marketing - Bowman, Melville Le Roy, 1881 - (Sold by Waterloo publishing co, 1915)

Corn; growing, judging, breeding, feeding, marketing; for the farmer, student and teacher of agriculture, a textbook for agricultural colleges and high shcools - Bowman, Melville Le Roy, 1881 - (Sold by Waterloo publishing co, 1915)

Corn; growing, judging, breeding, feeding, marketing; for the farmer and student of agriculture, a text-book for agricultural colleges and high schools - Bowman, Melville Le Roy, 1881 - (The authors, 1908)

Cosmos : revista ilustrada de artes y ciencias (Impr. y Fotocolografía del Cosmos, 1892)

Cosmos / Revue encyclopédique hebdomadaire des progrès.des sciences (1856)

Cosmos / Revue encyclopédique hebdomadaire des progrès.des sciences (1858)

Cottage gardener and country gentleman's companion (Wm. S. Orr, 1854)

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