Oesterreichische botanische Zeitschrift (A. Skofitz, 1878)

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Oeuvres complètes de Buffon avec des extraits de Daubenton, et la classification de Cuvier : tome 1-9 - Cuvier, Georges, baron, 1769 -1832 (Deros & Cie, 1852)

Œuvres complètes de Buffon avec la nomenclature Linnéenne et la classification de Cuvier - Buffon, Georges Louis Leclerc, comte de, 1707 -1788 (1853)

Official lists and indexes of names and works in zoology - International Commission on Zoological Nomenclature (ICZN, 1987)

Öfversigt af Kongl. Vetenskaps-akademiens forhandlingar - Kungl. Svenska vetenskapsakademien. (P. A. Norstedt & Söner, 1866)

Les Oiseaux d'Europe décrits par C. J. Temminck - Werner, Johann Carl. (1848)

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Okens Lehrbuch der Naturgeschichte - Oken, Lorenz, 1779 -1851 (Bei Carl Heinrich Reclam, 1816)

On the Orthoptera of the State of Maine - Smith, Sidney I. (Sidney Irving) 1843 -1926 (Portland Society of Natural History, 1868)

On the power, wisdom and goodness of God, as manifested in the creation of animals, and in their history, habits and instincts - Kirby, William, 1759 -1850 (Carey, Lea & Blanchard, 1836)

Onze vogels in huis en tuin - Keulemans, J. G. (John Gerrard), 1842 -1912 (P.W.M. Trap, 1869)

Ootheca Wolleyana: an illustrated catalogue of the collection of birds' eggs - Newton, Alfred, 1829 -1907 (sold by R. H. Porter, 1907)

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Ornithologia methodice digesta, atque iconibus aeneis ad vivum illuminatis ornata - Lorenzi, Lorenzo. (In Aedibus Mouchianis, 1769)

Ornithologia, or, The birds: a poem, in two parts : with an introduction to their natural history; and copious notes - Jennings, James. (Sherwood, Gilbert, and Piper, 1829)

Ornithologia, sive, Synopsis methodica sistens avium divisionem in ordines, sectiones, genera, species, ipsarumque varietates : cum brevi & accurata cujusque speciei descriptione, citationibus auctorum de iis tractantium, nominibus eis ab ipsis impositis, nominibusque vulgaribus - Brisson, Mathurin-Jacques, 1723 -1806 (Apud Theodorum Haak, 1763)

Ornithological dictionary of British birds - Rennie, James, 1787 -1867 (Hurst, Chance, 1831)

Ornithological dictionary of British birds - Rennie, James, 1787 -1867 (W. S. Orr & W. Smith, 1833)

An ornithological index, arranged according to the synopsis avium of Mr. Vigors / by T. B. L. Baker - Vigors, N. A.‏ ‎ (Nicholas Aylward),‏ ‎ 1785 -1840 (Printed by R. Taylor, 1835)

[Ornithological papers] - Seebohm, Henry, 1832 -1895 (1876)

Ornithologie de la Savoie, ou, Histoire des oiseaux : qui vivent en Savoie a l'état sauvage soit constamment, soit passagèrement - Bailly, J.-B. (Jean-Baptiste) (J.-B. Clary, 1853)

Ornithologie du chasseur : histoire naturelle, moeurs, habitudes chasse des oiseaux de plaine, de bois et de marais - Chenu, Jean-Charles, 1808 -1879 (J. Rothchild, editeur, 1870)

Ornithologie européenne, ou, Catalogue descriptif, analytique et raisonné des oiseaux observés en Europe - Gerbe, Zéphirin, 1810 -1890 (J.B. Bailli, 1867)

Ornithologie européenne, ou Catalogue analytique et raisonné des oiseux observés en Europe - Degland, Côme Damien, 1787 -1856 (Roret; [etc., etc.], 1849)

Ornithologie, ou, Méthode contenant la division des oiseaux en ordres, sections, genres, especes & leurs variétés : a laquelle on a joint une description exacte de chaque espece, avec les citations des auteurs qui en ont traité, les noms quils leur ont donnés, ceux que leur ont donnés les différentes nations, & les noms vulgaires - Martinet, François Nicolas, 1731 -1800 (Ad Ripam Augustinorum, apud Cl. Joannem-Baptistam Bauche, bibliopolam, ad Insigne S. Genovesae, & S. Joannis in Deserto, 1760)

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Ornithologisches Taschenbuch für Preussen oder; Beschreibung der in Preussen und den unliegenden Gegenden vorkommenden Vogel für Jager, Jagdliehaber und Naturforcher - Ebel, Carl L. (Rosbachschen Buchdruckerei, 1823)

Ornithologiske bemaerkninger til Norges fauna ... (Indberetning til det Academiske collegium ved det Kongelige Frederiks universitet - Collett, Robert, 1842 -1913 (J. Dahl, 1871)

Ornitologia italiana : opera postuma - Savi, Paul, 1798 -1871 (Successori Le Monnier, 1873)

Ornitologia toscana; ossia, Descrizione e storia degli uccelli che trovansi nella Toscana, con l'aggiunta della descrizioni di tutti gli altri proprj al rimanente d'Italia - Savi, Paul, 1798 -1871 (Dalla tipografia Nistri, 1827)

Orthoptera (Acridiidae) - Kirby, W. F. (William Forsell), 1844 -1912 (Taylor and Francis ; [etc., etc.], 1914)

Orthoptera of northeastern America, with especial reference to the faunas of Indiana and Florida - Blatchley, W. S. (Willis Stanley), 1859 -1940 (The Nature Publishing Company, 1920)

Our feathered families: game and water birds; being an anecdotal and descriptive account of the feathered game and wild fowl, with their allied species, found in Great Britain, to which is added a practical chapter on doves and pigeons - Adams, H. G. (Henry Gardiner), 1811 or 12 -1881 (J. Hogg and Sons, 1863)

Oversigt af Christiania omegns ornithologiske fauna - Collett, Robert, 1842 -1913 (J. Dahl, 1864)

P.A. Latreille scientiarum et artium instituti Gallici ... Genera crustaceorum et insectorum : secundum ordinem naturalem in familias disposita, iconibus exemplisque plurimis explicata - Latreille, P. A. (Pierre André), 1762 -1833 (Apud Amand Knig, Bibliopolam, 1807)

P.A. Latreille scientiarum et artium instituti Gallici ... Genera crustaceorum et insectorum : secundum ordinem naturalem in familias disposita, iconibus exemplisque plurimis explicata - Latreille, P. A. (Pierre André), 1762 -1833 (Apud Amand Knig, Bibliopolam, 1809)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1916)

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Die Pflanzenwelt Norwegens : ein Beitrag zur Natur- und Culturgeschichte Nord-Europas - Schübeler, F. C. (Frederik Christian), 1815 -1892 (1873)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1772)

Philosophical transactions of the Royal Society of London - Royal Society (Great Britain) (Royal Society of London, 1859)

The pictorial museum of animated nature - William Clowes; Sons, (George Cox, 18 King Street, Covent Garden, 1844)

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The powers of the Creator displayed in the creation; or, Observations on life amidst the various forms of the humbler tribes of animated nature - Dalyell, John Graham, 1775 -1851 (J. Van Voorst, 1851)

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A practical handbook of British birds - Witherby, H. F. (Harry Forbes), 1873 -1944 (Witherby, 1924)

Preliminary report of the United States Geological Survey of Montana, and portions of adjacent territories : being a fifth annual report of progress - Geological; Geographical Survey of the Territories (U.S.) (Govt. Print. Off, 1872)

The primaeval world of Switzerland - Heer, Oswald, 1809 -1883 (Longmans, Green, 1876)

Primo resoconto dei risultati della inchiesta ornitologica in Italia ... - Giglioli, Enrico Hillyer, 1845 -1909 (Coi tipi dei successori Le Monnier, 1889)

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Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1986)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1901)

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