Proceedings of the Davenport Academy of Natural Sciences - Davenport Academy of Natural Sciences. (Academy of Natural Sciences [etc.], 1910)

Proceedings of the Delaware County Institute of Science - Delaware County Institute of Science. (The Institute, 1905)

Proceedings of the ... Eastern Native Grass Symposium - United States. Natural Resources Conservation Service. (Agricultural Research Service, Natural Resources Conservation Service, 1997)

Proceedings of the Entomological Society of Washington - Entomological Society of Washington (Entomological Society of Washington, 1987)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1895)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1897)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1903)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1900)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1904)

Proceedings of the Indiana Academy of Science - Indiana Academy of Science. ([s.n.], 1920)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1891)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1929)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1955)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1962)

Proceedings of the International Ornithological Congress (Australian Academy of Science [etc.], 1982)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1917)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1918)

The Proceedings of the Iowa Academy of Science - Iowa Academy of Science (The Academy, 1919)

Proceedings of the Linnaean Society of New York ... - Linnaean Society of New York (Linnaean Society of New York, 1933)

Proceedings of the Linnaean Society of New York ... - Linnaean Society of New York (Linnaean Society of New York, 1941)

Proceedings of the Linnaean Society of New York ... - Linnaean Society of New York (Linnaean Society of New York, 1945)

Proceedings of the Linnaean Society of New York ... - Linnaean Society of New York (Linnaean Society of New York, 1954)

Proceedings of the Linnaean Society of New York ... - Linnaean Society of New York (Linnaean Society of New York, 1959)

Proceedings of the Linnaean Society of New York ... - Linnaean Society of New York (Linnaean Society of New York, 1974)

Proceedings of the Manchester Institute of Arts and Sciences - Manchester Institute of Arts; Sciences. (The Institute, 1900)

Proceedings of the Nebraska Ornithologists' Union - Nebraska Ornithologists' Union at its ... meeting. (1899)

Proceedings of the Nebraska Ornithologists' Union - Nebraska Ornithologists' Union at its ... meeting. (1908)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 1981)

Proceedings of the Nova Scotian Institute of Science - Nova Scotian Institute of Science. (Nova Scotian Institute of Science, 2011)

Proceedings of the Ornithological Sub-section of the Biological Section of the Canadian Institute - Royal Canadian Institute. Biological Section. Ornithological Sub-section. (The Institute, 1890)

Proceedings of the Rochester Academy of Science - Rochester Academy of Science. (The Academy, 1902)

Proceedings of the second Endangered Species and Prairie Conservation Workshop, January 1989 at the Saskatchewan Museum of Natural History, Regina, Saskatchewan - Smith, Hugh C. (Natural History Section, Provincial Museum of Alberta, 1991)

Proceedings of the Symposium on Management of Forest and Range Habitats for Nongame Birds, May 6-9, 1975, Tucson, Arizona - United States. Forest Service. (U.S. Dept. of Agriculture, Forest Service, 1975)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1887)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1890)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1938)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1940)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1941)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1942)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1954)

Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1957)

Proceedings of the VIIth International Orthnithological Congress at Amsterdam 1930 - Beaufort, L. F. de (Lieven Ferdinand), 1879 -1968 (C. de Boer Jr, 1931)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1868)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1869)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1872)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1876)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1879)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1880)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1881)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1884)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1888)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1898)

Proceedings of the Zoological Society of London - Zoological Society of London. (Academic Press, [etc.], 1911)

Proceedings, Symposium on Cheatgrass Invasion, Shrub Die-off and Other Aspects of Shrub Biology and Management : Las Vegas, NV, April 5-7, 1989 - Intermountain Research Station (Ogden, Utah) (Intermountain Research Station, Forest Service, U.S. Dept. of Agriculture, 1990)

Programmatic environmental assessment for containment/eradication of noxious plants tiered to the Northwest Area Noxious Weeds Control Program FEIS, 1985, Lewistown District - Montana - United States. Bureau of Land Management. (The District, 1986)

Proposed estuarine sanctuary grant award for Apalachicola Bay and Lower Apalachicola River, Franklin County, Florida to State of Florida - National Ocean Survey. Office of Coastal Zone Management. (The Office, 1979)

Proposed estuarine sanctuary grant award to the state of New York for a Hudson River estuarine sanctuary - National Ocean Survey. Office of Coastal Zone Management. (U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Office of Coastal Zone Management, 1982)

Protected Landscapes: experience around the world. Prepared for the International Symposium on Protected Landscapes, Grange-over-Sands, England 5-10 October 1987 (1987)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1960)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1963)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1979)

Psyche - Cambridge Entomological Club. (Cambridge Entomological Club, 1980)

Publications in zoology = Publications en zoologie - National Museum of Natural Sciences (Canada) (National Museums of Canada, National Museum of Natural Sciences, 1969)

Publications in zoology = Publications en zoologie - National Museum of Natural Sciences (Canada) (National Museums of Canada, National Museum of Natural Sciences, 1974)

The published writings of George Newbold Lawrence, 1844-1891 - Foster, Lyman Spalding. (Govt. Print. Off, 1892)

Quarterly journal of microscopical science (J. and A. Churchill [etc.], 1906)

The Quarterly journal of the Boston Zoological Society - Boston Zoological Society. (The Society, 1884)

Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1953)

Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1958)

Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1960)

Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1962)

Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1964)

Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1966)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1978)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1981)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1983)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1984)

Reading Naturalist. Reading - Reading Natural History Society.

Records of the Australian Museum - Australian Museum (Printed by order of the Trustees, 2010)

Recreation - Shields, G. O. (George Oliver), 1846 -1925 (G.O. Shields (Coquina), 1900)

Relationships between breeding birds and vegetation in four woodland types of the Little Missouri National Grasslands - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1986)

Relationships of endrin and other chlorinated hydrocarbon compounds to wildlife in Montana, 1981-1982 - Weigand, John P. (Wildlife Division, Montana Dept. of Fish, Wildlife, and Parks, 1983)

Report of the geological survey of Ohio - Geological Survey of Ohio. (Nevins & Meyers, 1882)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1906)

Report of the Michigan Academy of Science - Michigan Academy of Science. Council. (The Academy, 1908)

Report of the Royal Zoological Society of Ireland - Royal Zoological Society of Ireland. (1877)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1912)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1913)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1914)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1916)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1917)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1920)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1921)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1922)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1923)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1924)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1925)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1926)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1927)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1928)

Report of the Secretary of the Smithsonian Institution ... - Smithsonian Institution (Smithsonian Institution], 1929)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1937)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1938)

Report of the Secretary of the Smithsonian Institution and financial report of the Executive Committee of the Board of Regents for the year ending June 30 ... - Smithsonian Institution (Smithsonian Institution, 1961)

Report of the State board of agriculture on the work of extermination of the gypsy moth - Massachusetts. State board of agriculture. (Wright & Potter printing co., state printers, 1893)

Report of the State Entomologist on injurious and other insects of the state of New York - Felt, Ephraim Porter, 1868 -1943 (Weed, Parsons and Co.; University of the State of New York, 1889)

Report of the State Entomologist on injurious and other insects of the state of New York - Felt, Ephraim Porter, 1868 -1943 (Weed, Parsons and Co.; University of the State of New York, 1895)

Report of the State Entomologist on injurious and other insects of the state of New York - Felt, Ephraim Porter, 1868 -1943 (Weed, Parsons and Co.; University of the State of New York, 1894)

Report of the state zoölogist - Herrick, C. L. (Clarence Luther), 1858 -1904 (1892)

Report of the United States National Museum - United States National Museum (U.S. Govt. Print. Off, 1886)

Report of the United States National Museum - United States National Museum (U.S. Govt. Print. Off, 1887)

Report on bird migration in the Mississippi valley in the years 1884 and 1885 - Merriam, C. Hart (Clinton Hart), 1855 -1942 (Govt. Print. Off, 1888)

Report on the birds of Pennsylvania : with special reference to the food habits, based on over four thousand stomach examinations - Warren, Benjamin Harry, 1858 -1926 (E.K. Meyers, State Printer, 1890)