Notes on the habits of some Argentine and Peruvian woodpeckers (Aves, Picidae) - Short, Lester L. (American Museum of Natural History, 1970)

Notes on the natural history of Labrador - Bush, Katharine J. (Katharine Jeannette), 1855 -1937 (s.n, 1883)

Notes on the natural history of portions of Montana and Dakota; being the substance of a report to the Secretary of War on the collections made by the North Pacific Railroad Expedition of 1873, Gen. D.S. Stanley, commander - Allen, J. A. (Joel Asaph), 1838 -1921 (1874)

Novitates zoologicae : a journal of zoology in connection with the Tring Museum - British Museum (Natural History) (Zoological Museum, 1895)

Novitates zoologicae : a journal of zoology in connection with the Tring Museum - British Museum (Natural History) (Zoological Museum, 1908)

Novitates zoologicae : a journal of zoology in connection with the Tring Museum - British Museum (Natural History) (Zoological Museum, 1909)

Novitates zoologicae : a journal of zoology in connection with the Tring Museum - British Museum (Natural History) (Zoological Museum, 1918)

Novitates zoologicae : a journal of zoology in connection with the Tring Museum - British Museum (Natural History) (Zoological Museum, 1925)

Novo catálogo das aves do brasil; 1ª Parte aves não Passeriformes e Passeriformes não Oscines, com exclusão da família Tyrannidae - Pinto, Oliverio Mario de Oliveira (Cnpq, 1978)

Nuovi annali delle scienze naturali (1838)

Observations on the natural affinities that connect the orders and families of birds: togethers with description of a new species of scolopax ... with observations on the anas glocitans of pallas and a description of the female of that species - Vigors, N. A.‏ ‎ (Nicholas Aylward),‏ ‎ 1785 -1840 (Richard Taylor, 1825)

Occasional papers of the Boston Society of Natural History - Boston Society of Natural History. (Boston Society of Natural History, 1904)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1890)

Occasional papers of the California Academy of Sciences - California Academy of Sciences (California Academy of Sciences, 1893)

Oceanic birds of South America : a study of species of the related coasts and seas, including the American quadrant of Antarctica, based upon the Brewster-Sanford collection in the American Museum of Natural History - Jaques, Francis Lee, 1887 -1969 (Macmillan Co, 1936)

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

Official lists and indexes of names and works in zoology. Supplement 1986-2000 - International Commission on Zoological Nomenclature (International Trust for Zoological Nomenclature, c/o Natural History Museum, 2001)

L'Oiseau et la Revue francaise d'ornithologie - Société ornithologique de France. (Société ornithologique de France, 1936)

L'Oiseau et la Revue francaise d'ornithologie - Société ornithologique de France. (Société ornithologique de France, 1956)

L'Oiseau et la Revue francaise d'ornithologie - Société ornithologique de France. (Société ornithologique de France, 1957)

L'Oiseau et la Revue francaise d'ornithologie - Société ornithologique de France. (Société ornithologique de France, 1962)

L'Oiseau et la Revue francaise d'ornithologie - Société ornithologique de France. (Société ornithologique de France, 1972)

Les oiseaux de l'est du Canada - Taverner, P. A. (Percy Algernon), 1875 -1947 (F.A. Acland, 1922)

Les oiseaux de l'Europe et leurs oeufs, décrits et dessinés dáprès nature - Dubois, Alphonse, 1839 -1921. (Chez C. Muquardt, 1872)

Les oiseaux de l'Europe et leurs oeufs, décrits et dessinés d'après nature - Dubois, Alphonse, 1839 -1921. (chez C. Muquardt, 1872)

Les oiseaux de la province de Que´bec - Dionne, C.-E. (Charles-Eusèbe), 1846 -1925 (Dussault & Proulx, 1906)

Les oiseaux du Canada - Dionne, C.-E. (Charles-Eusèbe), 1846 -1925 (s.n.], 1883)

Les oiseaux du Canada - Dionne, C.-E. (Charles-Eusèbe), 1846 -1925 (P. G. Delisle, 1883)

Les oiseaux insectivores et les arbres d'ornement et forestiers - Provancher, L. (Léon), 1820 -1892 (s.n.], 1874)

Les oiseaux - Perrier, Edmond, 1844 -1921 (J.B. Bailli, 1904)

On some marine Invertebrata dredged or otherwise collected by Dr. G.M. Dawson, in 1885, on the coast of British Columbia; with a supplementary list of a few land and fresh water shells, fishes, birds, etc., from the same region - Whiteaves, Joseph Frederick, 1835 -1909 (Dawson brothers, 1887)

On the genesis of species - Mivart, St. George Jackson, 1827 -1900 (Macmillan & Co, 1871)

On the geology and natural history of the upper Missouri :Being the substance of a report made to Lieut. G.K. Warren, T.E. U.S.A - Hayden, F. V. (Ferdinand Vandeveer), 1829 -1887 (Printed by C. Sherman & son, 1862)

On the natural history and classification of birds - Swainson, William, 1789 -1855 (John Taylor, 1836)

On the Natural History and classification of Birds : vol. I and II - Swainson, William, 1789 -1855 (pr. for Longman [etc.], 1836)

On the origin of species - Darwin, Charles, 1809 -1882 (D. Appleton and Co, 1871)

On the origin of species by the means of natural selection, or, The preservation of favoured races in the struggle for life - Darwin, Charles, 1809 -1882 (Odhams Press, 1872)

On the plains, and among the peaks, or, How Mrs. Maxwell made her natural history collection - Ridgway, Robert, 1850 -1929 (Claxton, Remsen & Haffelfinger, 1879)

On the structure and affinities of the "tabulate corals" of the Palaeozoic period. With critical descriptions of illustrative species, by H. Alleyne Nicholson - Nicholson, Henry Alleyne, 1844 -1899 (William Blackwood and Sons, 1879)

The oölogist (J.M. Wade, 1878)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1890)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1891)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1894)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1895)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1896)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1898)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1899)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1902)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1908)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1910)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1922)

The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1923)

Opera ornithologica - Bonaparte, Charles-Lucien, 1803 -1857 (1857)

Opinions and declarations rendered by the International Commission on Zoological Nomenclature - International Commission on Zoological Nomenclature (Printed by order of the International Trust for Zoological Nomenclature, 1916)

Opinions and declarations rendered by the International Commission on Zoological Nomenclature - International Commission on Zoological Nomenclature (Printed by order of the International Trust for Zoological Nomenclature, 1955)

Opinions and declarations rendered by the International Commission on Zoological Nomenclature - International Commission on Zoological Nomenclature (Printed by order of the International Trust for Zoological Nomenclature, 1956)

The Oregon naturalist (Naturalist Pub. Co, 1895)

The Oregon naturalist (Naturalist Pub. Co, 1896)

The origin of species - Darwin, Charles, 1809 -1882 (Books, Inc, 1900)

The origin of species - Darwin, Charles, 1809 -1882 (Literary Classics, 1900)

The origin of species - Darwin, Charles, 1809 -1882 (P.F. Collier, 1909)

The origin of species by means of natural selecti : or, The preservation of favored races in the struggle for life - Darwin, Charles, 1809 -1882 (1904)

The origin of species by means of natural selection, or, the preservation of favoured races in the struggle for life - Darwin, Charles, 1809 -1882 (John Murray, 1872)

The origin of species by means of natural selection, or, The preservation of favoured races in the struggle for life - Darwin, Charles, 1809 -1882 (John Murray, 1880)

The origin of species by means of natural selection, or, The preservation of favoured races in the struggle for life - Darwin, Charles, 1809 -1882 (J. Murray, 1888)

The origin of species by means of natural selection; or, The preservation of favoured races in the struggle for life - Darwin, Charles, 1809 -1882 (J. Murray, 1886)

The origin of species by means of natural selection, or, The preservation of favored races in the struggle for life - Darwin, Charles, 1809 -1882 (A.L. Burt, 1899)

The origin of species by means of natural selection : or, The preservation of favored races in the struggle for life - Darwin, Charles, 1809 -1882 (Merrill and Baker, 1900)

The origin of species by means of natural selection, or, The preservation of favored races in the struggle for life - Darwin, Charles, 1809 -1882 (A.L. Burt, 1894)

The origin of species by means of natural selection; or, The preservation of favored races in the struggle for life - Darwin, Charles, 1809 -1882 (D. Appleton and Company, 1909)

The origin of species by means of natural selection, or, The preservation of favored races in the struggle for life - Darwin, Charles, 1809 -1882 (D. Appleton, 1899)

The origin of species by means of natural selection, or, The preservation of favored races in the struggle for life - Darwin, Charles, 1809 -1882 (D. Appleton and Company, 1917)

The origin of species by means of natural selection; or, The preservation of favored races in the struggle for life - Darwin, Charles, 1809 -1882 (D. Appleton and Company, 1889)

The origin of species by means of natural selection, or, The preservation of favoured races in the struggle for life - Darwin, Charles, 1809 -1882 (J. Murray, 1902)

The origin of species by means of natural selection : or The preservation of favored races in the struggle for life - Darwin, Charles, 1809 -1882 (Hurst, 1872)

Origin of species by means of natural selection, or, The preservation of favored races in the struggle for life - Darwin, Charles, 1809 -1882 (P. F. Collier, 1902)

Origin of species by means of natural selection, or the preservation of favored races in the struggle for life - Darwin, Charles, 1809 -1882 (P. F. Collier, 1905)

Origin of species - Darwin, Charles, 1809 -1882 (H.M. Caldwell Co, 1900)

The origin of the species by means of natural selection - Darwin, Charles, 1809 -1882 (J. Murray, 1910)

Ornis - International Ornithological Committee. (Carl Gerold's Sohn, 1906)

Ornis - International Ornithological Committee. (Carl Gerold's Sohn, 1910)

Ornithological bibliography - Coues, Elliott, 1842 -1899 (Geological Survey [etc.], 1878)

Ornithological biography, or an account of the habits of the birds of the United States of America ; accompanied by descriptions of the objects represented in the work entitled The Birds of America, and interspersed with delineations of American scenery and manners - Audubon, John James, 1785 -1851 (Adam Black, 1839)

Ornithological gazetteer of Peru - Traylor, Melvin A. (Melvin Alvah), 1915 -2008 (Bird Dept., Museum of Comparative Zoology, Harvard University, 1983)

Ornithological gazetteer of Uruguay - Paynter, Raymond A. Jr. (Obtainable from Bird Dept., Museum of Comparative Zoology, Harvard University, 1994)

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 report upon collections made in portions of California, Nevada, and Oregon - Henshaw, Henry W. (Henry Wetherbee), 1850 -1930 (1879)

Ornithologie - Orbigny, Alcide Dessalines d', 1802 -1857 (A. Bertrand, 1839)

Ornithologie du Canada. D'après la nomenclature de Baird - Le Moine, J. M. Sir, (James MacPherson), 1825 -1912 (Atelier typ. de J.T. Brousseau, 1861)

Ornithologie du Pérou - Taczanowski, Władysław, 1819 -1890 (Typographie Oberthur, 1884)

Ornithologie du Pérou - Taczanowski, Władysław, 1819 -1890 (Typographie Oberthur, 1886)

Ornithologie Nordost-Afrika's : der Nilquellen- und Küsten Gebiete des Rothen Meeres und des nördlichen Somal-Landes - Heuglin, Theodor von, 1824 -1876 (T. Fischer, 1874)

Ornithologie Nordost-Afrika's : der Nilquellen- und Küsten Gebiete des Rothen Meeres und des nördlichen Somal-Landes - Heuglin, Theodor von, 1824 -1876 (T. Fischer, 1873)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1893)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1912)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1922)

Ornithologische Monatsschrift - Deutscher Verein zum Schutze der Vogelwelt. (Kommissions-Verlag der Creutschen Verlagsbuchhandlung, 1903)

Ornithologische Monatsschrift - Deutscher Verein zum Schutze der Vogelwelt. (Kommissions-Verlag der Creutschen Verlagsbuchhandlung, 1905)

Ornithologischer Atlas, oder, Naturgetreue Abbildung und Beschreibung der aussereuropäischen Vogel - Hahn, Carl Wilhelm, 1786 -1835 (C.H. Zeh'sche Buchhandlung, 1834)

Ornithologisches Centralblatt (1880)

Ornithologisches Centralblatt (L.A. Kittler, 1879)

Ornithologisches Jahrbuch (V. Tschusi, 1892)

The Ornithologist and oölogist (1881)

The Ornithologist and oölogist (1882)

The Ornithologist and oölogist (1884)

The Ornithologist and oölogist (1885)

The Ornithologist and oölogist (1886)

The Ornithologist and oölogist (1887)

The Ornithologist and oölogist (1889)

The Ornithologist and oölogist (1890)

The Ornithologist and oölogist (1891)