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

Checklist of publications on entomology issued by the United States Department of Agriculture through 1927, with subject index - National Agricultural Library (U.S.) (United States Department of Agriculture, Library, 1930)

Circular - United States. Bureau of Entomology. (Govt. print. off, 1891)

Circular - United States. Bureau of Entomology. (The Bureau, 1911)

Circular - United States. Bureau of Entomology. (The Division, 1897)

Circular - United States. Bureau of Entomology. (The Division, 1907)

Cistula entomologica (E. W. Janson, 1874)

Civic biology; textbook of problems, local and national, that can be solved only by civic coöperation - Dawson, Jean, 1873 - (Ginn, 1918)

Civic biology; a textbook of problems, local and national, that can besolved only by civic cooperation - Dawson, Jean, 1873 - (Ginn and company, 1918)

Civic biology; a textbook of problems, local and national, that can be solved only by civic coöperation - Dawson, Jean, 1873 - (Ginn and Company, 1918)

Civic biology, a textbook of problems, local and national, that can be solved only by civic coöperation - Hodge, Clifton F. (Clifton Fremont), 1859 -1919 (Ginn, 1918)

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

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

Classification of the Coleoptera of North America - LeConte, John L. (John Lawrence), 1825 -1883 (Smithsonian Institution, 1883)

A classified index and synopsis of The animal kingdom arranged in conformity with its organization - Gray, John Edward 1800 -1875 (Printed for Whittaker and Co, 1835)

Coleoptera - Dimmock, George, 1852 -1930 (S.E. Cassino, 1884)

Coleoptera: Cerambycidae - Gahan, Charles J. (Charles Joseph), 1862 -1939 (Taylor and Francis, 1906)

Coleoptera Europae dupleta in collectione Villa : quae pro mutua commutatione offerri possunt - Villa, Antonio 1806 -1885 ([éditeur inconnu], 1833)

Coleoptera : general introduction and Cicindelidae and Paussidae - Fowler, W. W. (William Weekes), 1849 -1923 (Taylor and Francis,, 1912)

Coleoptera Neerlandica : de schildvleugelige insecten van Nederland en het aangrenzend gebied - Everts, Edouard Jacques Guillaume, 1849 -1932 (Nijhoff, 1901)

Coleoptera Neerlandica : de schildvleugelige insecten van Nederland en het aangrenzend gebied - Everts, Edouard Jacques Guillaume, 1849 -1932 (Nijhoff, 1922)

The Coleoptera of Kansas and eastern New Mexico - LeConte, John L. (John Lawrence), 1825 -1883 (Smithsonian Institution, 1859)

The Coleoptera of the British islands : a descriptive account of the families, genera, and species indigenous to Great Britain and Ireland, with notes as to localities, habitats, etc - Donisthorpe, Horace St. John Kelly (L. Reeve & co, 1890)

The Coleoptera of the British islands : a descriptive account of the families, genera, and species indigenous to Great Britain and Ireland, with notes as to localities, habitats, etc - Donisthorpe, Horace St. John Kelly (L. Reeve & co, 1891)

Coleoptera of the state of New York - Emmons, Ebenezer, 1799 -1863 (C. Van Benthuysen & Co, 1854)

Coleoptera. Vol. I. [Longicornia. Part I.] - Gahan, Charles J. (Charles Joseph), 1862 -1939 (Taylor & Francis, 1906)

The coleopterist's manual ... - Hope, F. W. (Frederick William), 1797 -1862 (H. G. Bohn [etc.], 1840)

Coleopterologische Hefte - Harold, Edgar von, 1830 -1886 (Carl Merhoff's Verlag, 1872)

Coleopterologische Hefte - Harold, Edgar von, 1830 -1886 (Carl Merhoff's Verlag, 1875)

Coleopterorum catalogus - Junk, Wilhelm, 1866 -1942 (W. Junk, 1921)

Coleopterorum catalogus - Junk, Wilhelm, 1866 -1942 (W. Junk, 1923)

College zoology - Hegner, Robert William, 1880 -1942 (The Macmillan company, 1912)

College zoology - Hegner, Robert William, 1880 -1942 (Macmillan, 1918)

The commercial apple industry of North America - Folger, John Clifford, 1890 - (The Macmillan company, 1921)

The commercial apple industry of North America - Folger, John Clifford, 1890 - (The Macmillan Co, 1921)

Commercial Nurseries Company [catalog] : growers of high grade nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Commercial Nurseries Company, 1916)

Commercial Nurseries Company [catalog] : growers of high grade nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Commercial Nurseries Company, 1917)

Commercial Nurseries Company [catalog] : growers of high grade nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Commercial Nurseries Company, 1921)

Commercial Nursery Company - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Austin & Nicholson Bros, 1903)

Commercial Nursery Company : growers of high grade nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. ([Austin & Nicholson Bros, 1913)

Commercial Nursery Company : growers of high grade nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. ([Austin & Nicholson Bros, 1915)

Commercial Nursery Company : growers of high grade nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Commercial Nursery Company, 1919)

Commercial Nursery Company growers of high grade nursery stock - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Austin & Nicholson Bros, 1910)

Common injurious insects of Kansas - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (University of Kansas, Dept. of Entomology, 1892)

Common insects affecting fruit-trees - Ontario. Dept. of Agriculture. (Dept. of Agriculture, 1907)

A comparison of radiographic and bark-removal methods for sampling of mountain pine beetle populations - Intermountain Forest; Range Experiment Station (Ogden, Utah) (Intermountain Forest & Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1974)

The complete farmer and rural economist - Fesseden, Thomas Green, 1771 -1837 (Otis, Broaders, & company, 1839)

The complete farmer and rural economist - Fesseden, Thomas Green, 1771 -1837 (Russell, Odiorne & co, 1835)

The complete farmer and rural economist : containing a compendious epitome of the most important branches of agricultural and rural economy - Fesseden, Thomas Green, 1771 -1837 (American Stationers' Co, 1838)

The complete farmer and rural economist : containing a compendious epitome of the most important branches of agricultural and rural economy - Fesseden, Thomas Green, 1771 -1837 (Russell, Ordiorne, 1835)

The complete writings of Thomas Say on the entomology of North America - Ord, George, 1781 -1866 (1883)

The complete writings of Thomas Say on the entomology of North America - LeConte, John L. (John Lawrence), 1825 -1883 (A. E. Foote, 1891)

The complete writings of Thomas Say on the entomology of North America - Ord, George, 1781 -1866 (Baillière brothers, 1859)

Comptes rendus hebdomadaires des séances de l'Académie des sciences - Centre national de la recherche scientifique (France) (publiés avec le concours du Centre national de la recherche scientifique par MM. les secrétaires perpétuels, 1838)

Comptes rendus hebdomadaires des séances de l'Académie des sciences - Centre national de la recherche scientifique (France) (publiés avec le concours du Centre national de la recherche scientifique par MM. les secrétaires perpétuels, 1847)

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

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

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

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

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

Congrès international d'entomologie : [proceedings] (Hayez, 1972)

Congrès international d'entomologie : [proceedings] (Hayez, 1977)

Congrès Scientifiques de France (1859)

Conradi Gesneri medici Tigurini Historiae animalium liber primus de quadrupedibus viuiparis : opus philosophis, medicis, grammaticis, philologis, poëtis, & omnibus rerum linguarumq́ue variarum studiosis, vtilissimum simul iucundissimumq́ue futurum - Gessner, Conrad, 1516 -1565 (In Bibliopolio Cambieriano, 1604)

Conradi Gesneri medici Tigurini Historiæ animalivm liber IV. : Qui est de piscium & aquatilium animantium natura. : Cum iconibus singulorum ad viuum expressis ferè omnibus DCCXII ... Continentur in hoc volumine, Gulielmi Rondeletii quoque, Medicinae Professoris Regij in Schola Monspeliensi, & Petri Bellonii Cenomani, medici hoc tempore Lutetiae eximij, de aquatlium singulis scripta. Paralipomena quaedam ad finem adiecta sunt - Gessner, Conrad, 1516 -1565 (In bibliopolio Andreae Cambieri, 1604)

Considérations générales sur la classe des insectes - Duméril, C. (Constant), 1774 -1860 (Chez F.G. Levrault, 1823)

Considérations générales sur la classe des insectes - Duméril, C. (Constant), 1774 -1860 (F. G. Levrault, 1823)

Constitution and by-laws of the Massachusetts Horticultural Society [1836] - Massachusetts Horticultural Society (Tuttle, Weeks & Dennett, Printers, 1836)

A contribution to a bibliography of the described immature stages of North American Coleoptera - United States. Bureau of Entomology; Plant Quarantine. ([U.S. Bureau of Entomology and Plant Quarantine], 1935)

Contributions from the Mineralogic Laboratory - Whitlock, Herbert P. (New York State Education Dept, 1905)

Contributions in science - Los Angeles County Museum of Natural History. (The Museum, 1973)

Contributions of the American Entomological Institute - American Entomological Institute. (American Entomological Institute], 1969)

Contributions to an insect fauna of the Amazon Valley : Coleoptera–Longicornes : Part I. Lamiares - Bates, Henry Walter, 1825 -1892 (Taylor and Francis, 1861)

Contributions to the flora and fauna of Repton and neighbourhood - Garneys, William. (Bemrose, 1881)

Cooperative agricultural pest survey 2004 report - Montana. Department of Agriculture (Montana Dept. of Agriculture, 2004)

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)

Cooperative economic insect report - United States. Bureau of Entomology; Plant Quarantine. (Plant Protection and Quarantine Programs Animal and Plant Health Service, 1955)

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