A contribution to the flora of Derbyshire being an account of the flowering plants, ferns, and Characeae found in the county - Painter, W. H. (George Bell, 1889)

Contribution to the fossil flora of Florissant, Colorado - Kirchner, Walter Charles George, 1875 - (1898)

A contribution to the ornithology of northeastern Brazil - Hellmayr, Carl Eduard, 1878 -1944 (1929)

A contribution toward a bibliography on North American fur animals - Yeager, Lee Emmett, 1907 - (1941)

Contributiones ad algologiam et fungologiam - Reinsch, Paul Friedrich, 1836 -1914 (T. O. Weigel, 1875)

Contributions à la faune ornithologique de l'Europe occidentale : recueil comprenant les espèces d'oiseaux que se reproduisent dans cette région ou qui s'y montrent régulièrement de passage, augmenté de la description des principales espèces exotiques les plus voisines des indigènes ou susceptibles d'ètre confondues avec elles, ainsi que l'énumération des races domestiques - Olphe-Galliard, Léon, 1825 -1893 (L. Lasserre, 1889)

Contributions à la flore algologique de la Tripolitaine et de la Cyrénaïque - Forti, Achille, 1878 -1937 (Masson, 1916)

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 Bermuda Biological Station for Research - Bermuda Biological Station for Research. ([s.n.], 1917)

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, 1898)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1891)

Contributions from the Hull Botanical Laboratory - Hull Botanical Laboratory. (University of Chicago Press, 1908)

Contributions from the New York Botanical Garden - New York Botanical Garden (The Garden, 1904)

Contributions from the Osborn Botanical Laboratory - Yale University. Osborn Botanical Laboratory (Osborn Botanical Laboratory, Yale University, 1916)

Contributions from the Osborn Botanical Laboratory - Yale University. Osborn Botanical Laboratory (Osborn Botanical Laboratory, Yale University, 1923)

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, 1901)

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, 1908)

Contributions in science - Los Angeles County Museum of Natural History. (The Museum, 1975)

Contributions of the American Entomological Institute - American Entomological Institute. (American Entomological Institute], 1966)

Contributions of the American Entomological Institute - American Entomological Institute. (American Entomological Institute], 1979)

Contributions of the American Entomological Institute - American Entomological Institute. (American Entomological Institute], 1980)

Contributions to Canadian biology - Biological Board of Canada. (Biological Board of Canada, 1917)

Contributions to Canadian biology - Biological Board of Canada. (Biological Board of Canada, 1914)

Contributions to Canadian biology : being studies from the Marine Biological Station of Canada - Biological Board of Canada. (s.n.], 1917)

Contributions to the fossil flora of the western territories ... - Lesquereux, Léo, 1806 -1889 (Govt. Print. Off, 1874)

Contributions to the Queensland flora - Bailey, Frederick Manson 1827 -1915 (Anthony James Cumming, Govt. Printer, 1890)

Contributions towards a Cybele hibernica, being outlines of the geographical distribution of plants in Ireland - Moore, David, 1807 -1879 (E. Ponsonby, 1898)

Contributions towards a fauna and flora of the county of Cork, read at the meeting of the British association held at Cork in the year 1843 - Cuvierian Society of Cork. (J. Van Voorst, 1845)

Contribuzioni alla flora fossile dei terreni terziarii della Liguria - Squinabol, Senofonte, 1861 -1941 (Tip. del R. Istituto Sordo-Muti, 1889)

Control of aquatic and ditchbank weeds - Crafts, Alden Springer, 1897 - (College of Agriculture, University of California, 1949)

Controlling aquatic vegetation with triploid grass carp - Illinois. Natural History Survey Division (Illinois Natural History Survey, 1987)

Copper and copper base alloys : the physical and mechanical properties of copper and its commercial alloys in wrought form - Bunn, Edward Schaible, 1906 -1969 (McGraw-Hill Book Company, Inc, 1943)

Corpus florarum provincialium Sueciae. I. Floram scanicam - Fries, Elias, 1794 -1878 (Typis Palmblad, Sebell & Co, 1835)

Correspondance botanique : liste des jardins, des chaires, des musées, des revues et des sociétés de botanique du monde - Morren, Édouard, 1833 -1886 (À la Boverie, no. 1, 1884)

Correspondence : Bolander (Henry) and Engelmann (George), 1863-1878 - Bolander, Henry N. (Henry Nicholas), 1831 -1897 (1863)

Correspondence : Bolander (Henry) and Engelmann (George), 1863-1878 - Bolander, Henry N. (Henry Nicholas), 1831 -1897 (1867)

Correspondence : Braun (Alexander) and Engelmann (George), 1866-1870 - Braun, Alexander, 1805 -1877 (1866)

Correspondence : Braun (Alexander) and Engelmann (George), 1866-1870 - Braun, Alexander, 1805 -1877 (1987)

Correspondence : Gay (Jacques) and Engelmann (George), 1853-1863 - Gay, Jacques Etienne, 1786 -1864 (1853)

Correspondence : Parry (Charles Christopher) and Engelmann (George), 1851-1884 - Engelmann, George, 1809 -1884 (1851)

Cosmos: a survey of the general physical history of the universe - Humboldt, Alexander von, 1769 -1859 (Harper & Brothers, 1845)

The cottage gardener, country gentleman's companion and poultry chronicle (G.W. Johnson, 1857)

The cottage gardener, country gentleman's companion and poultry chronicle (G.W. Johnson, 1858)

The cottage gardener, country gentleman's companion and poultry chronicle (G.W. Johnson, 1860)

Cours d'horticulture - Poiteau, Pierre-Antoine, 1766 -1854 (Mme Ve Bouchard-Huzard, 1848)

Cours élémentaire de paléontologie et de géologie stratigraphiques - Orbigny, Alcide Dessalines d', 1802 -1857 (V. Masson, 1852)

Cours élémentaire de botanique et flore du Canada à l'usage des maisons d'éducation - Moyen, J. (Jean), 1828 -1899 (Geo. E. Desbarats, 1871)

Cours élémentaire de botanique et flore du Canada à l'usage des maisons d'éducation - Moyen, J. (Jean), 1828 -1899 (G.E. Desbarats, 1871)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan and Co, 1892)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan and Co, 1879)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan and Co, 1889)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan, 1889)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan, 1898)

A course of elementary instruction in practical biology - Huxley, Thomas Henry, 1825 -1895 (Macmillan and Co, 1888)