The Oölogist for the student of birds, their nests and eggs - Lattin, Frank H. (Frank H. Lattin, 1893)

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 Oregon naturalist (Naturalist Pub. Co, 1896)

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

Ornithological observations in San Diego County - Emerson, W. Otto (1887)

[Ornithological papers] - Chicago Natural History Museum. (1909)

Ornithological vocabulary of the Moki Indians - Mearns, Edgar Alexander, 1856 -1916 (Judd & Detweiler, printers, 1896)

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)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1897)

The Ornithologist and botanist ([J.E. Blain, 1892)

The Ornithologist and oölogist (1886)

The Ornithologist and oölogist (1887)

The Ornithologist and oölogist (1888)

The Ornithologist and oölogist (1889)

The Ornithologist and oölogist (1890)

The ornithologist's text-book : being reviews of ornithological works : with an appendix, containing discussions on various topics of interest - Wood, Neville. (John W. Parker, 1836)

The ornithology of Illinois - Ridgway, Robert, 1850 -1929 (H.W. Rokker, printer, 1889)

The ornithology of Illinois - Ridgway, Robert, 1850 -1929 (H. W. Rokker, printer, 1889)

Oscar y Amanda, ó, Los descendientes de La Abadía - Blanquel, Simón. (Simon Blanquel, 1854)

The Osprey (The Osprey Co, 1897)

The Osprey (The Osprey Co, 1899)

The Osprey (The Osprey Co, 1900)

The Osprey (The Osprey Co, 1896)

Osteology of birds - Shufeldt, Robert Wilson 1850 -1934 (University of the State of New York, 1909)

O.S.U. naturalist - Ohio State University. Biological Club. (Biological Club of Ohio State University, 1903)

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, 1890)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1891)

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, 1900)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1901)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1918)

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

Our common birds and how to know them - Grant, John Beveridge (C. Scribner, 1895)

Our common birds and how to know them - Grant, John Beveridge (C. Scribner's sons, 1895)

Our common birds and how to know them - Grant, John Beveridge (C. Scribner's sons, 1891)

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)

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, 1913)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1914)

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

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

Papers and communications read before the Natural History Society of British Columbia - Natural History Society of British Columbia. (Natural History Society of British Columbia?], 1891)

A Partial list of the birds of Franklin County, Iowa - Shoemaker, Frank H. (F.H. Shoemaker, 1896)

Pássaros do Brasil (vida e costumes) - Santos, Eurico (F. Briguiet & Cia, 1940)

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)

Periódico zoológico - Sociedad Entomológica Argentina. (Sociedad Entomica Argentina, 1874)

La perla de la America : provincia de Santa Marta, reconocida, observada y expuesta en discursos historicos - Julián, Antonio, 1722 - (Por Don Antonio de Sancha, 1787)

Perú : Cerros de Kampankis - Stotz, Douglas F. (Douglas Forrester), 1956 - (The Field Museum, Environment, Culture, and Conservation, 2012)

Perú : Yaguas-Cotuhé - Field Museum of Natural History. (Field Museum, Environment, Culture, and Conservation, 2011)

Philosophia botanica : in qua explicantur fundamenta botanica cum definitionibus partium, exemplis terminorum, observationibus rariorum, adiectis figuris aeneis - Linné, Carl von, 1707 -1778 (Typis Joannis Thomae Trattner, 1755)

Physis - Sociedad Argentina de Ciencias Naturales. (Asociación Argentina de Ciencias Naturales [etc.], 1916)

Physis - Sociedad Argentina de Ciencias Naturales. (Asociación Argentina de Ciencias Naturales [etc.], 1921)

Plantas nuevas chilenas ... - Philippi, Rodolfo Amando, 1808 -1904 (Impr. Cervantes, 1893)

Plantas nuevas chilenas ... - Philippi, Rodolfo Amando, 1808 -1904 (Impr. Cervantes, 1896)

Pocket guide to the common land birds of New England - Willcox, M. A. (Mary Alice), 1856 -1953 (Lee and Shepard, 1895)

Pocket key of the birds of the northern United States, east of the Rocky Mountains - Apgar, A. C. (Austin Craig), 1838 -1908 (J.L. Murphy Pub. Co., Printers, 1893)

Poey's ichthyological memoirs - Poey, Felipe, 1799 -1891 (s.n, 1870)

Política hidráulica : (mision social de los riegos e España) - Costa y Martínez, Joaquín, 1846 -1911 (Costa, 1911)

The Popular educator: a complete encyclopaedia of elementary, advanced and technical education (Cassell, 1888)

A popular handbook of the birds of Canada and the United States - Nuttall, Thomas, 1786 -1859 (Musson Book Co, 1907)