The Ornithologist and oölogist (1887)

The Ornithologist and oölogist (1888)

The Ornithologist and oölogist (1889)

The Ornithologist and oölogist (1890)

The Ornithologist and oölogist (1892)

Ornithology - Jardine, William, 1800 -1874 (W.H. Lizars, 1854)

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)

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

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)

Ornithology of North Carolina : A list of the birds of North Carolina, with notes of each species - Smithwick, John Washington Pearce. (1897)

Ornitologia della Papuasia e delle Molucche - Salvadori, Tommaso, 1835 -1923 (G.B. Paravia, 1880)

The Osprey (The Osprey Co, 1900)

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

Osteology of Circus hudsonius - Shufeldt, Robert Wilson 1850 -1934 (1889)

O.S.U. naturalist - Ohio State University. Biological Club. (Biological Club of Ohio State University, 1901)

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, 1896)

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, 1902)

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

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

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1915)

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 bird comrades - Keyser, Leander S. (Leander Sylvester), 1856 -1937 (Rand, McNally & company, 1907)

Our birds in their haunts : a popular treatise on the birds of eastern North America - Langille, J. H. (James Hibbert), 1841 -1923 (Orange Judd, 1892)

Our birds in their haunts : a popular treatise on the birds of Eastern North America - Langille, J. H. (James Hibbert), 1841 -1923 (S. E. Cassino, 1884)

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 birds in their haunts a popular treatise on the birds of eastern North America - Langille, J. H. (James Hibbert), 1841 -1923 (S.E. Cassino, 1884)

Our common cuckoo and other cuckoos and parasitical birds : an attempt to reach a true theory of them by comparative study of habit and function : with a thorough criticism and exposure of Darwin's views and Romane's views and those of their followers - Darwin, Charles, 1809 -1882 (T. Burleigh, 1899)

Our home birds. A brief account of some of the common feathered tenants of the farm - Warren, Benjamin Harry, 1858 -1926 (1896)

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, 1900)

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, 1909)

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

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

Pacific seabirds : a publication of the Pacific Seabird Group - Pacific Seabird Group. (The Group, 2013)

Pacific seabirds : a publication of the Pacific Seabird Group - Pacific Seabird Group. (The Group, 2016)

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

Pamphlets on forest protection (1900)

Pamphlets on forestry in Maryland (1900)

Papéis avulsos do Departamento de Zoologia - São Paulo Departamento de Zoologia (A Secretaria, 1948)

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

Papers and published notes : 1869 to 1876 - Goode, G. Brown (George Brown), 1851 -1896 (1869)

Parasitology (Cambridge University Press, 1922)

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

A partial list of the birds of St. Louis and Lake Counties, Minn - Roberts, Thomas S. (Thomas Sadler), 1858 -1946 (1880)

Partnerships for sustainable forest ecosystem management : fifth Mexico/U.S. biennial symposium : October 17-20, 1994, Guadalajara, Jalisco, Mexico - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1995)

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, 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)

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

Pesticides documentation bulletin - National Agricultural Library (U.S.) (National Agricultural Library, U.S. Dept. of Agriculture, #c 1965-1969, 1965)

Pesticides monitoring journal - United States. Chemical Information Division. (Technical Services Division, Office of Pesticide Programs, U.S. Environmental Protection Agency, 1981)

Pesticides monitoring journal - United States. Chemical Information Division. (Technical Services Division, Office of Pesticide Programs, U.S. Environmental Protection Agency, 1978)

Phytoneuron (Guy L. Nesom, 2012)

Phytoneuron (Guy L. Nesom, 2013)

Plant associations of the Crooked River National Grassland - United States. Forest Service. Pacific Northwest Region. (USDA, Forest Service, Pacific Northwest Region, 1983)

Plant communities of the Kevin Rim, Toole County, Montana : preliminary survey results - Montana Natural Heritage Program. ([Montana Natural Heritage Program], 1990)

The Pleistocene avifauna of the Talara tar seeps, northwestern Peru - Campbell, Kenneth E. Jr. (Kenneth Eugene), 1943 - (1973)

Plumas Lassen Study : 2006 annual report - Sierra Nevada Research Center (U.S.) (USDA Forest Service Pacific Southwest Research Station, Sierra Nevada Research Center, 2006)

Point Lobos Reseerve; State Park, California - California. Division of Beaches; Parks. ([State Print. Off, 1954)

Polychlorinated biphenyl hazards to fish, wildlife, and invertebrates : a synoptic review - U.S. Fish; Wildlife Service (The Service, 1986)

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

A popular handbook of the birds of Canada and the United States - Nuttall, Thomas, 1786 -1859 (Musson Book Co, 1903)

A popular handbook of the birds of the United States and Canada - Nuttall, Thomas, 1786 -1859 (Little, Brown, 1903)

A popular handbook of the birds of the United States and Canada - Nuttall, Thomas, 1786 -1859 (Little, Brown, 1919)

A popular handbook of the birds of the United States and Canada - Nuttall, Thomas, 1786 -1859 (Little, Brown, 1905)

A popular handbook of the ornithology of eastern North America - Nuttall, Thomas, 1786 -1859 (Little, Brown, 1891)

A popular Handbook of the Ornithology of Eastern North America - Nuttall, Thomas, 1786 -1859 (Truslove and Hanson, 1894)

A popular handbook of the ornithology of eastern North America - Nuttall, Thomas, 1786 -1859 (Little, Brown, and Company, 1896)

A popular handbook of the ornithology of the United States and Canada, based on Nuttall's Manual - Nuttall, Thomas, 1786 -1859 (Little, Brown, and Company, 1891)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1893)

The Popular science monthly - Harry Houdini Collection (Library of Congress) (Popular Science Pub. Co., etc, 1872)

Postilla - Peabody Museum of Natural History. (Peabody Museum of Natural History, 1950)

Postilla - Peabody Museum of Natural History. (Peabody Museum of Natural History, 1968)

Potential of BLM lands in western Fresno and eastern San Benito and Monterey counties, California, as critical habitats for the endangered San Joaquin kit fox, Vulpes macrotis mutica, and blunt-nosed leopard lizard, Crotaphytus silus - United States. Bureau of Land Management. (EG&G Energy Measurements Group, Santa Barbara Operations, 1981)

Potential wildlife-highway interactions at select mile-markers along Montana Department of Transportation routes an ArcView GIS analysis - Irby, Lynn R. (Fish and Wildlife Management Program, Montana State University, 2001)

Practices for protecting and enhancing fish and wildlife on coal surface-mined land in central and southern Appalachia - United States. Bureau of Mines. (U.S. Department of the Interior, Fish and Wildlife Service, Division of Biological Services, Western Energy Land Use Team, 1983)

Practices for protecting and enhancing fish and wildlife on coal surface-mined land in the southcentral U.S - U.S. Fish; Wildlife Service. Office of Biological Services. (U.S. Department of the Interior, Fish and Wildlife Service, Office of Biological Services, 1983)

Praktische Naturgeschichte der Vögel, für Gebildete aller Stände - Reichenbach, A. B. (Anton Benedikt), 1807 -1880 (1850)

Preliminary biological and cultural resources inventory and environmental evaluation of the proposed operational base sites in Coyote Spring Valley and the Milford-Beryl Area - United States. Bureau of Land Management. (Fugro Northwest, 1981)

A preliminary catalog of the birds of Missouri - Widmann, Otto (Academy of Science of St. Louis, 1907)

A preliminary list of the birds found in Vermont - Perkins, George H. (George Henry), 1844 -1933 (Wynkoop Hallenbeck Crawford Co, 1901)

A preliminary list of the birds of Wayne County, Ohio - Oberholser, Harry C. (Harry Church), 1870 -1963 (Westbote Co., State Printers, 1896)

Preliminary report of explorations in Nebraska and Dakota, in the years 1855-'56-'57 - Warren, Gouverneur Kemble, 1830 -1882 (Govt. Print. Off, 1875)

A preliminary report on the biology of Harding County, northwestern South Dakota - Visher, Stephen Sargent, 1887 -1967 (State Publishing Co, 1914)

A preliminary review of the birds of Nebraska : with synopses - Wolcott, Robert Henry, 1868 -1934 (Klopp & Bartlett Co, 1904)

The principles of applied zoology - Wardle, Robert A. (Robert Arnold), 1890 -1974 (Longmans, Greem, and co, 1929)

Proceedings - Essex Institute. (1856)

The proceedings and transactions of the Nova Scotian Institute of Science, Halifax, Nova Scotia - Nova Scotian Institute of Science. (Printed for the Institute by W. McNab, 1895)

Proceedings and transactions of the Nova Scotian Institute of Natural Science - Nova Scotian Institute of Natural Science. (Nova Scotian Institute of Natural Science, 1863)

The Proceedings and transactions of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1902)

Proceedings and transactions of the Nova Scotian Institute of Natural Science - Nova Scotian Institute of Natural Science. (Nova Scotian Institute of Natural Science, 1886)

Proceedings of the Academy of Natural Sciences of Philadelphia - Academy of Natural Sciences of Philadelphia. (Academy of Natural Sciences of Philadelphia, 1846)