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, 1898)

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

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 and Co, 1883)