Ornithological gazetteer of Argentina - Paynter, Raymond A. Jr. (Obtainable from Bird Dept., Museum of Comparative Zoology, Harvard University, 1995)

Ornithological gazetteer of Brazil - Traylor, Melvin A. (Melvin Alvah), 1915 -2008 (Obtainable from Bird Dept., Museum of Comparative Zoology, Harvard University, 1991)

Ornithological gazetteer of Chile - Paynter, Raymond A. Jr. (Bird Dept., Museum of Comparative Zoology, Harvard University, 1988)

Ornithological gazetteer of Colombia - Paynter, Raymond A. Jr. (Bird Dept., Museum of Comparative Zoology, Harvard University, 1997)

Ornithological gazetteer of Ecuador - Paynter, Raymond A. Jr. (Obtainable from Bird Dept., Museum of Comparative Zoology, Harvard University, 1993)

An ornithological gazetteer of Peru : based on information compiled by J.T. Zimmer - Zimmer, John T. (John Todd), 1889 -1957 (American Museum of Natural History, 1972)

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

Ornithological gazetteer of the Guianas - Traylor, Melvin A. (Melvin Alvah), 1915 -2008 (Obtainable from Bird Dept., Museum of Comparative Zoology, Harvard University, 1985)

Ornithological gazetteer of Venezuela - Paynter, Raymond A. Jr. (Bird Dept., Museum of Comparative Zoology, Harvard University, 1982)

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

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1895)

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

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1898)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1899)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1900)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1902)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1906)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1907)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1909)

Ornithologische Monatsberichte (Verlag von R. Friedländer & Sohn, 1910)

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

Ornithologisches Centralblatt (L.A. Kittler, 1876)

Ornithologisches Centralblatt (1880)

Ornithologisches Centralblatt (1881)

Ornithologisches Centralblatt (L.A. Kittler, 1878)

Ornithologisches Centralblatt (1882)

Ornithologisches Jahrbuch (V. Tschusi, 1901)

Ornithologisches Jahrbuch (V. Tschusi, 1904)

Ornithologisches Jahrbuch (V. Tschusi, 1906)

Ornithology and oölogy of New England: containing full descriptions of the birds of New England, and adjoining states and provinces ... - Samuels, Edward A. (Edward Augustus), 1836 -1908 (Nichols and Noyes, 1867)

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

A ornitologia do Brasil através das idades (século XVI a século XIX) - Pinto, Olivério M. de O. (Olivério Mario (1979)

The Osprey (The Osprey Co, 1900)

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

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

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)

Outlines of American ornithology : part 1, Land birds - Baird, Spencer Fullerton, 1823 -1887 (Little, Brown, 1873)

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

Pamphlets on forestry in West Virginia (1900)

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Papéis avulsos do Departamento de Zoologia - São Paulo Departamento de Zoologia (A Secretaria, 1944)

Papéis avulsos do Departamento de Zoologia - São Paulo Departamento de Zoologia (A Secretaria, 1947)

Papéis avulsos do Departamento de Zoologia - São Paulo Departamento de Zoologia (A Secretaria, 1952)

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P.D. Skaar's Montana bird distribution - Bergeron, Dwight. (Montana Natural Heritage Program, 1992)

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Pennaraptoran theropod dinosaurs : past progress and new frontiers - Novas, Fernando E (American Museum of Natural History, 2020)

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)

Penny Cyclopaedia of the Society for the Diffusion of Useful Knowledge - Society for the Diffusion of Useful Knowledge (Great Britain) (Charles Knight, 1833)

Per una classificazione elementare dei Passercei, Rampicanti e Trogoni, raccolta e ordinamento di alcuni caratteri - Cavazza, Filippo. (Tipografia di Paolo Neri, 1909)

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Pinacographia : illustrations of more than 1,000 species of north-west-European Icheumonide, sensu Linnaeano = Afbeeldingen van meer dan 1,000 soorten noord-west-Europeesche sluipwespen (ichneumones sensu Linnaeano) - Snellen van Vollenhoven, S. C. (Samuel Constant), 1816 -1880 (Martinus Nijhoff, 1880)

Pinacographia. Illustrations of more than 1,000 species of north-west-European Ichneumonide, sensu Linnaeano. Afbeeldingen van meer dan 1,000 soorten noord-west-europeesche sluipwespen (ichneumones sensu Linnaeano) - Snellen van Vollenhoven, S. C. (Samuel Constant), 1816 -1880 (M. Nijhoff, 1880)

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Die Praxis der Naturgeschichte : ein vollständiges Lehrbuch über das Sammeln lebender und todter Naturkörper; deren Beobachtung, Erhaltung und Pflege im freien und gefangenen Zustand; Konservation, Präparation und Aufstellung in Sammlungen etc - Martin, Philipp Leopold, 1815 -1885 (Bernhard Friedrich Voigt, 1876)

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Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1905)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1906)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1910)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1929)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1956)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1957)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1958)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1961)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1982)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1986)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1987)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1990)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1992)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1993)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1995)

Proceedings of the Biological Society of Washington - Smithsonian Institution (Biological Society of Washington, 1996)