Ornithologisches Jahrbuch (V. Tschusi, 1914)

Ornithologisches Jahrbuch (V. Tschusi, 1915)

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)

Ornithology - Jardine, William, 1800 -1874 (W.H. Lizars, 1853)

Ornithology - Geological Survey of California. (University press] pub. by authority of the Legislature [of California], 1870)

The ornithology of Chester County, Pennsylvania - Burns, Frank L. (Franklin Lorenzo), 1869 -1946 (R. G. Badger, 1919)

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)

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

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 - Eyton, T. C. (Thomas Campbell), 1809 -1880 (Salop, R. Hobson)

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

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

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

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1902)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1911)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1910)

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

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

Our birds in their haunts: a popular treatise on the birds of eastern North America - Langille, J. H. (James Hibbert), 1841 -1923 (Orange Judd Co, 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)

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

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

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1904)

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

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1912)

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, 1919)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1921)

Pacific coast avifauna - Cooper Ornithological Club. (Cooper Ornithological Club, 1923)

Paleontological investigations at Mineral Hill Cave - Broughton, Jack M. (U.S. Department of the Interior, Bureau of Land Management, Elko Field Office, 2004)

Pamietnik Fizyjograficzny (Druk K. Kowalewskiego, 1888)

The Pan-Pacific entomologist - Van Duzee, Edward P. (Edward Payson), 1861 -1940 (Pacific Coast Entomological Society, 1996)

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

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

P.D. Skaar's Montana bird distribution - Montana Natural Heritage Program. (Montana Natural Heritage Program, 2012)

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

P.D. Skaar's Montana bird distribution - Skaar, Palmer David. (Montana Natural Heritage Program, 2003)

P.D. Skaar's Montana bird distribution - Skaar, Palmer David. (Montana Natural Heritage Program, 1996)

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)

Pesticides monitoring journal - United States. Chemical Information Division. (Technical Services Division, Office of Pesticide Programs, U.S. Environmental Protection Agency, 1974)

The Philippine journal of science - Philippines. National Science Development Board. (Bureau of Science, 1919)

The Phoenix - Jennings, Michael C. (M.C. Jennings, 1991)

The Phoenix - Jennings, Michael C. (M.C. Jennings, 1993)

The Phoenix - Jennings, Michael C. (M.C. Jennings, 1995)

The Phoenix - Jennings, Michael C. (M.C. Jennings, 1996)

The Phoenix - Jennings, Michael C. (M.C. Jennings, 1997)

The Phoenix - Jennings, Michael C. (M.C. Jennings, 1998)

The Phoenix - Jennings, Michael C. (M.C. Jennings, 1999)

The Phoenix - Jennings, Michael C. (M.C. Jennings, 2008)

The Phoenix - Jennings, Michael C. (M.C. Jennings, 2012)

The Phoenix - Jennings, Michael C. (M.C. Jennings, 2014)

The pictorial museum of animated nature - Knight, Charles, 1791 -1873 (C. Cox, 1844)

The pictorial museum of animated nature ... - Knight, Charles, 1791 -1873 (C. Knight, 1844)

Pleistocene birds of the palearctic : a catalogue - Nuttall Ornithological Club. (Nuttall Ornithological Club, 1998)