The complete book of British butterflies - Frohawk, Frederick William, 1861 -1946 (Ward, Lock, 1934)

Compte rendu des séances de la Société de physique et d'histoire naturelle de Genève - Société de physique et d'histoire naturelle de Genève. (Bureau des Archives, 1910)

Congrès international d'entomologie : [proceedings] (Hayez, 1926)

Congrès international d'entomologie : [proceedings] (Hayez, 1910)

Congrès international d'entomologie : [proceedings] (Hayez, 1933)

Congrès international d'entomologie : [proceedings] (Hayez, 1939)

Congrès international d'entomologie : [proceedings] (Hayez, 1938)

Congrès international d'entomologie : [proceedings] (Hayez, 1952)

Congrès international d'entomologie : [proceedings] (Hayez, 1958)

Congrès international d'entomologie : [proceedings] (Hayez, 1971)

Congrès international d'entomologie : [proceedings] (Hayez, 1980)

Congrès international d'entomologie : [proceedings] (Hayez, 1984)

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

Congrès international d'entomologie : [proceedings] (Hayez, 1992)

Congrès international d'entomologie : [proceedings] (Hayez, 1996)

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

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

Congrès international d'entomologie : [proceedings] (Hayez, 2016)

Conservation overview of butterflies in the southern headwaters at risk project (SHARP) area - Alberta. Fish; Wildlife Division. (Alberta Sustainable Resource Development, Fish & Wildlife Division, Biodiversity and Species At Risk Section, 2004)

Conservation status of Haplopappus carthamoides var. susquarrosus in Montana - Lesica, Peter (Montana Natural Heritage Program, 1995)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1969)

Contributions from the Gray Herbarium of Harvard University - Harvard University. Gray Herbarium. (Harvard University, 1973)

Contributions in science - Los Angeles County Museum of Natural History. (The Museum, 2001)

Contributions of the American Entomological Institute - American Entomological Institute. (American Entomological Institute], 1987)

Contributions to the natural history of the Lepidoptera of North America ... - Barnes, William, 1860 -1930 (The Review press, 1916)

Contributions to the natural history of the Lepidoptera of North America ... - Barnes, William, 1860 -1930 (The Review press, 1918)

Contributions to the natural history of the United States of America - Agassiz, Louis, 1807 -1873 (Little, Brown and Company, 1857)

Cooperative economic insect report - United States. Bureau of Entomology; Plant Quarantine. (Plant Protection and Quarantine Programs Animal and Plant Health Service, 1958)

Cooperative economic insect report - United States. Bureau of Entomology; Plant Quarantine. (Plant Protection and Quarantine Programs Animal and Plant Health Service, 1960)

Cooperative economic insect report - United States. Bureau of Entomology; Plant Quarantine. (Plant Protection and Quarantine Programs Animal and Plant Health Service, 1962)

Cooperative economic insect report - United States. Bureau of Entomology; Plant Quarantine. (Plant Protection and Quarantine Programs Animal and Plant Health Service, 1951)

Cooperative economic insect report - United States. Bureau of Entomology; Plant Quarantine. (Plant Protection and Quarantine Programs Animal and Plant Health Service, 1969)

Cooperative economic insect report - United States. Bureau of Entomology; Plant Quarantine. (U.S. Dept. of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, 1951)

Correspondenz-blatt des Entomologischen Vereins "Iris" zu Dresden - Entomologischer Verein "Iris" zu Dresden. (Entomologischer Verein "Iris" zu Dresden, 1884-1888, 1886)

Correspondenz-blatt des Entomologischen Vereins "Iris" zu Dresden - Entomologischer Verein "Iris" zu Dresden. (Entomologischer Verein "Iris" zu Dresden, 1884-1888, 1887)

Correspondenz-blatt des Entomologischen Vereins "Iris" zu Dresden - Entomologischer Verein "Iris" zu Dresden. (Entomologischer Verein "Iris" zu Dresden, 1884-1888, 1888)

Correspondenz-blatt des Naturwissenschaftlichen Vereins (früher Zoologisch-mineralogischer Verein) in Regensburg - Naturwissenschaftlicher Verein Regensburg. (Naturwissenschaftlichen Verein, 1885)

Correspondenz-blatt des Zoologisch-mineralogischen Vereins in Regensburg - Zoologisch-Mineralogischer Verein (Regensburg, Germany) (Zoologisch-mineralogischer Verein, 1852)

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, 1860)

Cotton-integrated pest management : proceedings of a symposium, September 3-9, 1990, Alma-Ata, Kazakhstan - Alimukhamedov, Sultan N. (United States Department of Agriculture, Agricultural Research Service, 1992)

Crossosoma - Southern California Botanists. (Southern California Botanists, Rancho Santa Ana Botanic Garden, 1990)

Cunninghamia: A journal of plant ecology for eastern Australia - National Herbarium of New South Wales, (Royal Botanic Gardens, National Herbarium of New South Wales, 1997)

Cunninghamia: A journal of plant ecology for eastern Australia - National Herbarium of New South Wales, (Royal Botanic Gardens, National Herbarium of New South Wales, 2019)

The cyclopædia of India and of Eastern and Southern Asia : commercial, industrial and scientific, products of the mineral, vegetable, and animal kingdoms, useful arts and manufactures - Balfour, Edward, 1813 -1889 (B. Quaritch, 1885)

The Daffodil journal - American Daffodil Society. (American Daffodil Society, 2002)

Dai-ikkai zenkoku konchu tenrankai shuppin mokuroku - Nawa, Yasushi, 1857 -1926 (Nawa Konchu Kenkyujo, 1902)

Dainippon gaichu zensho - Matsumura, Shōnen 1872 -1960 (Rokumeikan, 1915)

Danmarks fauna; illustrerede haandbøger over den danske dyreverden... - Dansk naturhistorisk forening. (G.E.C. Gad, 1966)

The Darwinian theory of the transmutation of species - Jarrold; Sons, (James Nisbet & Co, 1867)

Darwinism : an exposition of the theory of natural selection, with some of its applications - Wallace, Alfred Russel, 1823 -1913 (Macmillan, 1891)

Darwinism; an exposition of the theory of natural selection, with some of its applications - Wallace, Alfred Russel, 1823 -1913 (Macmillan and co, 1889)

Denkschriften der Kaiserlichen Akademie der Wissenschaften / Mathematisch-Naturwissenschaftliche Classe - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (Aus der Kaiserlich-Königlichen Hof- und Staatsdruckerei, 1850)

Denkschriften der Kaiserlichen Akademie der Wissenschaften / Mathematisch-Naturwissenschaftliche Classe - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (Aus der Kaiserlich-Königlichen Hof- und Staatsdruckerei, 1879)

Denkschriften der Kaiserlichen Akademie der Wissenschaften / Mathematisch-Naturwissenschaftliche Classe - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (Aus der Kaiserlich-Königlichen Hof- und Staatsdruckerei, 1910)

Denkschriften der Kaiserlichen Akademie der Wissenschaften / Mathematisch-Naturwissenschaftliche Classe - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (Aus der Kaiserlich-Königlichen Hof- und Staatsdruckerei, 1916)

Denkschriften der Kaiserlichen Akademie der Wissenschaften / Mathematisch-Naturwissenschaftliche Classe - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (Aus der Kaiserlich-Königlichen Hof- und Staatsdruckerei, 1917)

Denkschriften der Medicinisch-Naturwissenschaftlichen Gesellschaft zu Jena - Medizinisch-naturwissenschaftliche Gesellschaft zu Jena. (Fischer, 1913)

Denkschriften der Medicinisch-Naturwissenschaftlichen Gesellschaft zu Jena - Medizinisch-naturwissenschaftliche Gesellschaft zu Jena. (Fischer, 1894)

Department bulletin - United States. Department of Agriculture. (Supt. of Docs., G.P.O, 1913)

The descent of man, and selection in relation to sex - Darwin, Charles, 1809 -1882 (John Murray, 1871)