The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1909)

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

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

Conspectus generum avium - Bonaparte, Charles-Lucien, 1803 -1857 (Apud E.J. Brill, 1850)

Contribución al estudio del gen. Triatoma lap - Del Ponte, Eduardo (Instituto Bacteriologia, Departemento Nacional de Higiene, 1920)

Contribution à l'étude de la faune des microcavernes.–Faune des terriers et des nids ... - Falcoz, Louis. (A. Rey, 1914)

Contribution à l'étude de la pneumaticité chez les oiseaux - Bignon, Fanny. (s. n, 1889)

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, 1887)

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, 1886)

Contributions in quaternary vertebrate paleontology: a volume in memorial to John E. Guilday - Genoways, Hugh H. (Carnegie Museum of Natural History, 1984)

Contributions in science - Los Angeles County Museum of Natural History. (The Museum, 1962)

Contributions of the American Entomological Institute - American Entomological Institute. (American Entomological Institute], 1968)

Contributions of the American Entomological Institute - American Entomological Institute. (American Entomological Institute], 1970)

Contributions of the American Entomological Institute - American Entomological Institute. (American Entomological Institute], 1972)

Contributions to embryology - Carnegie Institution of Washington

Contributions to the anatomy of birds - Shufeldt, Robert Wilson 1850 -1934 (1882)

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

Contributions to the history of Australasian ornithology - Nuttall Ornithological Club. (Nuttall Ornithological Club, 2008)

Contributions to the history of North American ornithology - Jackson, Jerome A (Nuttall Ornithological Club, 1995)

Contributions to the history of North American ornithology - Jackson, Jerome A (Nuttall Ornithological Club, 2000)

Contributions to the natural history of the Bermudas. Vol. I - Goode, G. Brown (George Brown), 1851 -1896 (Govt. print. off, 1884)

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)

Control series bulletin - Massachusetts Agricultural Experiment Station. (University of Massachusetts, 1914)

Controlled natural selection and value marketing - Mottram, James Cecil, 1880 - (Longmans, Green and Co, 1914)

Controlled natural selection and value marking - Mottram, James Cecil, 1880 - (Longmans, Green, 1914)

The correspondence of John Ray: consisting of selections from the philosophical letters published by Dr. Derham, and original letters of John Ray in the collection of the British Museum - Ray, John, 1627 -1705 (Printed for the Ray Society, 1848)

The correspondence of John Ray, consisting of selections from the philosophical letters published by Dr. Derham and original letters of John Ray in the collection of the British Museum - Ray, John, 1627 -1705 (Printed for the Ray Society, 1848)

Correspondenz-blatt des Naturwissenschaftlichen Vereins (früher Zoologisch-mineralogischer Verein) in Regensburg - Naturwissenschaftlicher Verein Regensburg. (Naturwissenschaftlichen Verein, 1883)

Correspondenz-blatt des Zoologisch-mineralogischen Vereins in Regensburg - Zoologisch-Mineralogischer Verein (Regensburg, Germany) (Zoologisch-mineralogischer Verein, 1850)

Correspondenz-blatt des Zoologisch-mineralogischen Vereins in Regensburg - Zoologisch-Mineralogischer Verein (Regensburg, Germany) (Zoologisch-mineralogischer Verein, 1851)

Correspondenz-blatt des Zoologisch-mineralogischen Vereins in Regensburg - Zoologisch-Mineralogischer Verein (Regensburg, Germany) (Zoologisch-mineralogischer Verein, 1853)

Correspondenz-blatt des Zoologisch-mineralogischen Vereins in Regensburg - Zoologisch-Mineralogischer Verein (Regensburg, Germany) (Zoologisch-mineralogischer Verein, 1859)

Costs and threats of invasive species to Alberta's natural resources - Alberta. Alberta Sustainable Resource Development. (Alberta Sustainable Resource Development, 2004)

The Coues check list of North American birds - Coues, Elliott, 1842 -1899 (Estes and Lauriat, 1882)

Country rambles, and Manchester walks and wild flowers: being rural wanderings in Cheshire, Lancashire, Derbyshire, & Yorkshire - Grindon, Leo H. (Leo Hartley), 1818 -1904 (Palmer & Howe, 1882)

Country rambles. Being a field naturalist's and country lover's note book for a year - Westell, W. Percival (William Percival), 1874 -1943 (H.J. Drane, 1903)

The crane-flies of New York - Alexander, Charles P. (Charles Paul), 1889 -1981 (1920)

The crane-flies of New York. Part II. Biology and phylogeny - Alexander, Charles P. (Charles Paul), 1889 -1981 (1920)

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)

Danmarks fauna; illustrerede haandbøger over den danske dyreverden... - Dansk naturhistorisk forening. (G.E.C. Gad, 1954)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1906)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1907)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1908)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1909)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1911)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1912)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1913)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1914)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1915)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1916)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1917)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1918)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1919)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1920)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1921)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1922)

Dansk ornithologisk forenings tidsskrift - Dansk ornitologisk forening. (Den Forening, 1923)

Darwinism to-day - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and company, 1907)

Darwinism to-day; a discussion of present-day scientific criticism of the Darwinian selection theories, together with a brief account of the principal other proposed auxiliary and alternative theories of species-forming - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and company, 1907)

Darwinism to-day a discussion of present-day scientific criticism of the Darwinian selection theories : together with a brief account of the principal other proposed auxillary and alternative theories of species-forming - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (G. Bell, 1907)

The dates of publication of some of the zoological works of the late John Gould, F.R.S - Waterhouse, Frederick Herschel, 1845 -1919 (R. H. Porter, 1885)

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, 1874)

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, 1894)

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, 1907)

Department circular - Massachusetts. Dept. of Agriculture. (1918)

Des hybrides à l'état sauvage. Règne animal. 1. volume. (Classe des oiseaux) - Suchetet, André, 1849 - (Impr. Le Bigot frères, 1896)