The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2005)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2014)

The Canadian field-naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 2017)

Capital natural de México - Sarukhan, Jose (Comisión Nacional para el Conocimiento y Uso de la Biodiversidad (CONABIO), 2008)

Cardinal Divide area baseline survey water quality and aquatic biota 1995-96 : data report - Alberta. Water Management Division. (Alberta Environmental Protection], Natural Resources Service, Water Management Division, Water Sciences Branch, 1998)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1907)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1912)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1915)

Carnegie Institution of Washington publication - Carnegie Institution of Washington (Carnegie Institution of Washington, 1938)

The carnivorous plants, by Francis Ernest Lloyd - Lloyd, Francis Ernest, 1868 -1947 (Chronica Botanica Company, 1942)

Cascade-Siskiyou National Monument : draft resource management plan/environmental impact statement - United States. Bureau of Land Management. Medford District. (U.S. Department of the Interior, Bureau of Land Management, Medford District Office, 2002)

Casopis Ceské spolecnosti entomologické = Acta Societatis Entomologicae Bohemiae - Ceská spolecnost entomologická (Spolecnost, 1905)

Casopis Ceské spolecnosti entomologické = Acta Societatis Entomologicae Bohemiae - Ceská spolecnost entomologická (Spolecnost, 1906)

Casopis Ceské spolecnosti entomologické = Acta Societatis Entomologicae Bohemiae - Ceská spolecnost entomologická (Spolecnost, 1907)

Casopis Ceské spolecnosti entomologické = Acta Societatis Entomologicae Bohemiae - Ceská spolecnost entomologická (Spolecnost, 1908)

Casopis Ceské spolecnosti entomologické = Acta Societatis Entomologicae Bohemiae - Ceská spolecnost entomologická (Spolecnost, 1910)

Casopis Ceské spolecnosti entomologické = Acta Societatis Entomologicae Bohemiae - Ceská spolecnost entomologická (Spolecnost, 1913)

Casopis Ceské spolecnosti entomologické = Acta Societatis Entomologicae Bohemiae - Ceská spolecnost entomologická (Spolecnost, 1917)

Casopis Ceské spolecnosti entomologické = Acta Societatis Entomologicae Bohemiae - Ceská spolecnost entomologická (Spolecnost, 1918)

Cassell's natural history - Duncan, P. Martin (Peter Martin), 1821 -1891 (Cassell, Petter & Galpin, 1876)

Catalog of hymenoptera in America north of Mexico - Krombein, Karl V. (Smithsonian Institution Press, 1979)

Catalogo de los insectos Dipteros de Chile - Reed, Edwyn C. (Imprenta Nacional, 1888)

Catalogue de la bibliothèque - Bohnensieg, G. C. W. (Georg Carl Wilhelm), 1828 - (Héritiers Loosjes, 1885)

Catalogue of injurious insects in Japan (exclusive of animal parasites) - Shiraki, Tokuichi, 1882 -1970. (1952)

A catalogue of manuscripts in the Entomology Library of the Natural History Museum, London - Natural History Museum (London, England) (Mansell, 1996)

A catalogue of North American Diptera (or two-winged flies) - Osten-Sacken, C. R. (Carl Robert), 1828 -1906 (Smithsonian Institution, 1905)

Catalogue of publications relating to entomology in the Library of the U.S. Department of Agriculture - United States. Department of Agriculture. Library, (Govt. Print. Off, 1906)

Catalogue of scientific papers, 1800-1863 [to 1884-1900] - Royal Society (Great Britain) (Eyre & Spottiswoode, 1896)

Catalogue of scientific papers, 1800-1863 [to 1884-1900] - Royal Society (Great Britain) (Eyre & Spottiswoode, 1918)

Catalogue of scientific papers, 1800-1863 [to 1884-1900] - Royal Society (Great Britain) (Eyre & Spottiswoode, 1921)

Catalogue of the books, manuscripts, maps and drawings in the British museum (Natural history) .... - Woodward, Bernard Barham, 1853 -1930 (Printed by order of the Trustees, 1910)

Catalogue of the books, manuscripts, maps and drawings in the British museum (Natural history) .... - Woodward, Bernard Barham, 1853 -1930 (Printed by order of the Trustees, 1922)

Catalogue of the books, manuscripts, maps and drawings in the British museum (Natural history) .... - Woodward, Bernard Barham, 1853 -1930 (Printed by order of the Trustees, 1933)

Catalogue of the described Diptera from South Asia - Wulp, F. M. van der, (Frederick Maurits) 1818 -1899 (M. Nijhoff, 1896)

Catalogue of the described Diptera of North America - Osten-Sacken, C. R. (Carl Robert), 1828 -1906 (Smithsonian Institution, 1878)

Catalogue of the described Diptera of North America - Osten-Sacken, C. R. (Carl Robert), 1828 -1906 (Smithsonian institution, 1858)

Catalogue of the Diptera of the Afrotropical Region - Cogan, B H (British Museum (Natural History), 1980)

Catalogue of the diptera of the Americas South of United States - Sao Paulo (Est). Secretaria da Agricultura. Departamento de Zoologia (S.N, 1966)

Catalogue of the diptera of the Americas South of United States - Sao Paulo (Est). Secretaria da Agricultura. Departamento de Zoologia (S.N, 1984)

Catalogus dipterorum hucusque descriptorum - Kertész, Kálmán, 1867 -1922 (G. Engelmann, 1902)

Catalogus dipterorum hucusque descriptorum - Kertész, Kálmán, 1867 -1922 (G. Engelmann, 1910)

Catalogus systematicus dipterorum Europae - Schiner, Ignaz Rudolph, 1813 -1873 (impensis Societatis zoologico-botanicae editus, 1864)

Centralblatt für Physiologie - Physiologische Gesellschaft zu Berlin. (Toeplitz & Deuticke, 1894)

The Century dictionary : an encyclopedic lexicon of the English language: prepared under the superintendence of William Dwight Whitney - Whitney, William Dwight, 1827 -1894 (Century Co, 1889)

A century of biological research - Mills, Harlow B. (Harlow Burgess), 1906 -1971 (Illinois Natural History Survey, 1958)

Die Cephalopoden - Valdivia (Ship) (G. Fischer, 1910)

Ceratopogoninae de Belgique - Goetghebuer, Maurice. (Hayez, imprimeur de l'Académie royale de Belgique, 1921)

Changes in hydrology and water quality following forest harvesting and their impact on salmonid fishes in the Tri-Creeks Basin - Alberta. Alberta Forestry, Lands; Wildlife. (Alberta Forestry, Lands and Wildlife, Forest Service, 1991)

Check-list and bibliography on the occurrence of insects in birds' nests - Hicks, Ellis A. (Iowa State College Press, 1959)

Check-list of the insects of Connecticut - Britton, Wilton Everett, 1868 -1939 (State Geological and Natural History Survey, 1920)

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

Checklist of Fish and Invertebrates Listed in the CITES Appendices - Almada-Villela, Patricia C. (Nature Conservancy Council, 1988)

The Chironomidae, or midges, of Illinois, with particular reference to the species occurring in the Illinois River - Malloch, John Russell, 1875 -1963 (1914)

Chironomides de Belgique et spécialement de la zone des Flandres - Goetghebuer, Maurice. (M. Hayez, imprimeur de l'Académie royale de Belgique, 1921)

The chromosomes - White, M. J. D. (Michael James Denham),‏ ‎ 1910 -1983 (Chemical Pub. Co, 1937)

Class book of economic entomology, with special reference to the economic insects of the northern United States and Canada - Lochhead, W. (Blakiston, 1919)

A classification of the Lepidoptera based on characters of the pupa - Mosher, Edna (1915)

A classification of the mosquitoes of North and Middle America - Coquillett, D. W. (Daniel William), 1856 -1911 (G.P.O, 1906)

Classification of wetlands and deepwater habitats of the United States - Biological Services Program (U.S.) (Fish and Wildlife Service, U.S. Dept. of the Interior, 1979)

The Clear Lake gnat - Herms, William B. (William Brodbeck), 1876 -1949 (Agricultural Experiment Station, 1937)

The Coleopterists' Bulletin - Coleopterists Society. (Coleopterists' Society, 1961)