Ornitología mexicana - Herrera, Alfonso L., 1838 -1901 (Impr. de I. Escalante, 1898)

Ornitologia siciliana : o sia catalogo ragionato degli uccelli che si trovano in Sicilia - Benoit, Luigi, 1804 -1890 (Giuseppe Fiumara, 1840)

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)

L'Ornitologo Ticinese ossia manuale descrittivo gli Uccelli di stazione e di passaggio nel Cantone Ticino, &c - Riva, Antonio. (1865)

The Orthoptera of Indiana : an illustrated descriptive catalogue of the species known to occur in the state, with bibliography, synonymy and descriptions of new species - Blatchley, W. S. (Willis Stanley), 1859 -1940 ([Indiana Dept. of Geology and Natural Resources, 1903)

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)

The Osprey (The Osprey Co, 1898)

The Osprey (The Osprey Co, 1900)

Osteologia avium, or, A sketch of the osteology of birds - Brooks, Vincent, 1815? -1885 (Published by R. Hobson, Wellington, Salop, 1867)

Osteologia avium, or, A sketch of the osteology of birds - Brooks, Vincent, 1815? -1885 (Published by R. Hobson, Wellington, Salop, 1875)

Osteologia avium : or a sketch of the osteology of birds - Eyton, T. C. (Thomas Campbell), 1809 -1880 (Salop, R. Hobson)

Osteology of the North American Tetraonidae - Shufeldt, Robert Wilson 1850 -1934 (Govt. Print. Off, 1881)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1887)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1888)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1889)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1895)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1898)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1899)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1904)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1913)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1917)

Our birds in their haunts: a popular treatise on the birds of eastern North America - Langille, J. H. (Orange Judd Co, 1892)

Our country's birds and how to know them. A guide to all the birds of Great Britain - Gordon, W. J. (Simpkin, Marshall, Hamilton, Kent, 1892)

Our living resources : a report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems - United States. National Biological Service. (U.S. Dept. of the Interior, National Biological Service, 1995)

Our living world; an artistic edition of the Rev. J. G. Wood's Natural history of animate creation - Wood, J. G. (John George), 1827 -1889 (S. Hess, 1885)

Our native birds of song and beauty, being a complete history of all the songbirds, flycatchers, hummingbirds, swifts, goatsuckers, woodpeckers, kingfishers, trogons, cuckoos, and parrots, of North America - Nehrling, Henry, 1853 -1929 (G. Brumder, 1893)

Our native ferns and their allies with synoptical descriptions of the American pteridophyta north of Mexico - Underwood, Lucien Marcus, 1853 -1907 (H. Holt, 1900)

Our native songsters - Pratt, Anne, 1806 -1893 (Printed for the Society for Promoting Christian Knowledge, 1853)

Our northern and eastern birds : containing descriptions of the birds of the northern and eastern states and British provinces; together with a history of their habits, times of arrival and departure, their distribution, food, song, time of breeding, and a careful and accurate description of their nests and eggs - Samuels, Edward A. (Edward Augustus), 1836 -1908 (R. Worthington, 1883)

Our northern and eastern birds. Containing descriptions of the birds of the northern and eastern states and British provinces; together with a history of their habits, times of arrival and departure, their distribution, food, song, time of breeding, and a careful and accurate description of their nests and eggs ... - Samuels, Edward A. (Edward Augustus), 1836 -1908 (R. Worthington, 1883)

Our northern and eastern birds containing descriptions of the birds of the northern and eastern states and British provinces, together with a history of their habits, times of arrival and departure, their distribution, food, song, time of breeding, and a careful and accurate description of their nests and eggs ; with illustrations of many species of the birds and accurate figures of their eggs - Samuels, Edward A. (Edward Augustus), 1836 -1908 (R. Worthington, 1883)

Our summer migrants. An account of the migratory birds which pass the summer in the British islands - Harting, James Edmund, 1841 -1928 (Bickers and son, 1875)

Our summer migrants. An account of the migratory birds which pass the summer in the British Islands - Harting, James Edmund, 1841 -1928 (Bickers and Son, 1875)

Our summer migrants. An account of the migratory birds which pass the summer in the British Islands - Harting, James Edmund, 1841 -1928 (S. Sonnenschein & co, 1901)

Outlines of general zoology - Baird, Spencer Fullerton, 1823 -1887 (Rudolph Garrigue, 1851)

Outlines of the natural history of Great Britain and Ireland, containing a systematic arrangement and concise description of all the animals, vegetables and fossiles which have hitherto been discovered in these kingdoms - Berkenhout, John, 1730 -1791 (Printed for P. Elmsly (Successor to Mr. Vaillant), 1769)

Over vogels van Deli (Sumatra) - Heyst, A. F. C. A. van (1919)

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

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1902)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1909)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1901)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1913)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1917)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1919)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1915)

Palearctic Migratory Bird Survey, survey records, 1966-1973 : Egypt banding information (040-01856 to 040-02000; 040-02349 to 040-02500; 040-2544 to 040-2600; 040-2602 to 040-3676), Fall 1971, PMS banding forms - National Museum of Natural History (U.S.) Palearctic Migratory Bird Survey (1971)

Palearctic Migratory Bird Survey, survey records, 1966-1973 : skeletons numeric list (1966)

Palearctic Migratory Bird Survey, survey records, 1966-1973 : Egypt banding information (040-00092 to 040-01753; 040-02001 to 040-02348), 1969-1970, banding forms - National Museum of Natural History (U.S.) Palearctic Migratory Bird Survey (1960)

Palearctic Migratory Bird Survey, survey records, 1966-1973 : Egypt banding information (040-04323 to 040-04391), 1973, PMS banding forms - National Museum of Natural History (U.S.) Palearctic Migratory Bird Survey (1973)

Palearctic Migratory Bird Survey, survey records, 1966-1973 : Cyprus banding information (CYS-226 to CYS-384; PH-7180 to PH-7250; PH-6701 to PH-6777; HK-64060 to HK-64996; BE-78598 to BE-78700; BE-77651 to BE-77702; CS-71793 to CS-71819; DS-51029 to DS-51048; DS-51500 to DS-51522), Spring 1968, PMS banding forms - National Museum of Natural History (U.S.) Palearctic Migratory Bird Survey (1968)

Palearctic Migratory Bird Survey, survey records, 1966-1973 : Egypt banding information (040-03736 to 040-04322; 050-05886 to 050-06000; 050-03001 to 050-03220), Fall 1972, PMS banding forms - National Museum of Natural History (U.S.) Palearctic Migratory Bird Survey (1972)

Palearctic Migratory Bird Survey, survey records, 1966-1973 : Egypt banding information (040-01754 to 040-01855, Spring 1971, PMS banding forms - National Museum of Natural History (U.S.) Palearctic Migratory Bird Survey (1971)

Palearctic Migratory Bird Survey, survey records, 1966-1973 : Egypt specimens (4008 to 4933), 1968 - National Museum of Natural History (U.S.) Palearctic Migratory Bird Survey (1968)

Paleontological bulletin / by Edward D. Cope - Cope, E. D. (Edward Drinker), 1840 -1897 (s.n.], 1872)

Palestine Exploration Fund : quarterly statement - Palestine Exploration Fund. (The Fund, 1885)

Palestine Exploration Fund : quarterly statement - Palestine Exploration Fund. (The Fund, 1888)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1916)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1918)

Papéis avulsos do Departamento de Zoologia - São Paulo Departamento de Zoologia (A Secretaria, 1950)

Papers read before the Purbeck Society - Purbeck Society. (1856)

La parasitologie comparée du sang - Danilevskii, V. IA. (Vasilii IAkovlevich), 1852 - (Typ. de M.A. Darré, 1889)

Parasitology - British Society for Parasitology. (Cambridge University Press, 1916)

Part I. Palæontology - Hall, James, 1811 -1898 (Govt. print. off, 1877)

The passerine birds of Ceylon - Wait, W. E. (Walter Ernest), 1878 - (s.n, 1922)

The pastoral review (Wool Exchange, 1921)

Pennsylvania bird life; a manual of the birds of Pennsylvania; treating especially of their food, from examinations of several thousand stomachs, made during all seasons of the year, with descriptions of the birds, their nests, eggs and habits - Warren, Benjamin Harry, 1858 -1926 (Penn'a., Pub by the author, 1892)