The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1920)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1921)

The condor - Cooper Ornithological Club. (Cooper Ornithological Club, 1909)

Contents and index to volume 1 - Cory, Charles B. (Charles Barney), 1857 -1921 (Natural History Museum, 1917)

Contents and index to volume 12, numbers 1 to 19, Zoological series - Field Museum of Natural History. (Field Museum of Natural History, 1929)

Contribucion á la ornitologia cubana - Gundlach, Johannes Christoph, 1810 -1896 (Imp. "La Antilla" de N. Cacho-Negrete, 1876)

Contribution to the ornithology of San Domingo - Cherrie, George Kruck, 1865 -1946 (1896)

Contributions in quaternary vertebrate paleontology: a volume in memorial to John E. Guilday - Genoways, Hugh H. (Carnegie Museum of Natural History, 1984)

Contributions in science - Los Angeles County Museum of Natural History. (The Museum, 1958)

Contributions in science - Los Angeles County Museum of Natural History. (The Museum, 1963)

Contributions in science - Los Angeles County Museum of Natural History. (The Museum, 1980)

Contributions of the Maclurian Lyceum to the arts and sciences - Peale, Titian Ramsay, 1799 -1885 (Sold for the Maclurian Lyceum by J. Dobson, 1827)

Contributions to avian palaeontology from the Pacific coast of North America - Miller, Loye, 1874 -1970 (University of California press, 1912)

Contributions to the history of North American ornithology - Jackson, Jerome A (Nuttall Ornithological Club, 2010)

Contributions to the natural history of the Bermudas. Vol. I - Goode, G. Brown (George Brown), 1851 -1896 (Govt. print. off, 1884)

The Coues check list of North American birds - Coues, Elliott, 1842 -1899 (Estes and Lauriat, 1882)

Da ema ao beija-flor vida e costumes das aves do Brasil - Santos, Eurico (F. Briguiet, 1938)

The Death valley expedition. A biological survey of parts of California, Nevada, Arizona, and Utah. Part II - Stejneger, Leonhard, 1851 -1943 (Govt. print. off, 1893)

Denkschriften der Kaiserlichen Akademie der Wissenschaften / Mathematisch-Naturwissenschaftliche Classe - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (Aus der Kaiserlich-Königlichen Hof- und Staatsdruckerei, 1926)

Department bulletin - United States. Department of Agriculture. (Supt. of Docs., G.P.O, 1924)

A descriptive catalogue of the birds of Massachusetts - Samuels, Edward A. (Edward Augustus), 1836 -1908 (Wright & Potter, 1864)

The development of nestling feathers - Jones, Lynds, 1865 -1951 (1907)

Diaries of William Brewster, 1865-1919 (inclusive) - Brewster, William, 1851 -1919 (1909)

Dicionário dos animais do Brasil - Ihering, Rodolpho von, 1883 -1939 (sine nomine, 1940)

A Directory of Neotropical Wetlands (1986)

A directory of the ornithologists of the United States : comprising a list of the collectors and students of ornithology, with the valuations of their collections, number of species represented, &c., &c., supplemented by statistics of value and information concerning public and private collections, average value of public and private collections, topics of interest to amateurs, &c.,&c - Willard, S. L. (The Oologist, 1877)

Directory of Wetlands of International Importance (1987)

Directory of Wetlands of International Importance (1990)

Directory to the birds of Eastern North America - Maynard, C. J. (Charles Johnson), 1845 -1929 (1907)

The distribution and occurrence of the birds of Jackson County, Oregon, and surrounding areas - Browning, M. Ralph (Fish and Wildlife Service, 1975)

The distribution of bird-life in Colombia; a contribution to a biological survey of South America - Fuertes, Louis Agassiz, 1874 -1927 (Pub. by order of the trustees, 1917)

Distribution, season of use, and habitat of the mammals, birds, reptiles, amphibians, and fishes of Idaho - Wilson, Lanny O. (U.S. Department of the Interior, Bureau of Land Management, Idaho State Office, 1975)

A distributional list of the birds of Arizona - Swarth, Harry S. (Harry Schelwald), 1878 -1935 (Cooper Ornithological Club, 1914)

A distributional list of the birds of Arizona - Cooper Ornithological Society. (Cooper Ornithological Club, 1914)

A distributional list of the birds of Montana, with notes on the migration and nesting of the better known species - Saunders, Aretas A. (Aretas Andrews), 1884 -1970 (The Club, 1921)

Diversity monitoring in Montana, 2008-2010 : final report - Maxell, Bryce A. (Bryce Alan) ([Montana Inventory and Monitoring Project (Diversity Monitoring)], 2010)

The Dominion of Canada (s.n, 1900)

Draft stateline resource management plan and environmental impact statement : [public land in Clark and Nye County, southern Nevada] - United States. Bureau of Land Management. Las Vegas District. (U.S. Department of the Interior, Bureau of Land Management, Stateline Resource Area, 1992)

Duck and pheasant use of water bank program agreement areas in east-central South Dakota - United States. Soil Conservation Service. (U.S. Dept. of Agriculture, Soil Conservation Service, 1985)

The early history of ornithology in Texas - Texas Ornithological Society. (Texas Ornithological Society, 2002)

An early pleistocene avifauna from Inglis, Florida - Carr, Gail Elaine Speaker, 1952 - (1981)

An ecological characterization of Coastal Maine (north and east of Cape Elizabeth) - U.S. Fish; Wildlife Service (Department of the Interior, U.S. Fish and Wildlife Service, Northeast Region, 1980)

Ecological infrastructure mapping - southern Alberta region - Alberta. Alberta Environment. (Alberta Environment, 2008)

Ecological land classification of Carson-Pegasus Provincial Park - Alberta. Alberta Environment. (Alberta Environment, 1999)

Ecological land classification of Police Outpost Provincial Park and Outpost Wetlands natural area - Alberta. Alberta Environment. (Alberta Environment, 2001)

Ecological resources baseline report : technical report for the White Pine Power Project - United States. Bureau of Land Management. Nevada State Office. (Dames & Moore, 1983)

An ecological study of the black-crowned night heron in southern Alberta - University of Alberta. Department of Zoology. (1966)

An ecological survey in northern Michigan - Adams, Charles C. (Charles Christopher), 1873 -1955 (Wynkoop Hallenbeck Crawford co., state printers, 1906)

An ecological survey of Isle Royale, Lake Superior - Adams, Charles C. (Charles Christopher), 1873 -1955 (Wynkoop Hallenbeck Crawford Co., State Printers, 1909)

Ecologically significant wetlands in the Upper Yellowstone River watershed : including the Boulder, Clarks Fork Yellowstone, Shields, and Stillwater River drainages - United States. Environmental Protection Agency. (Montana Natural Heritage Program, 2001)

The ecology and economics of Oneida Lake fish - Adams, Charles C. (Charles Christopher), 1873 -1955 (Roosevelt Wild Life Forest Experiment Station, 1928)

Ecology of Buzzards Bay : an estuarine profile - United States. National Biological Service. (U.S. Dept. of the Interior, National Biological Service, 1996)

The ecology of delta marshes of coastal Louisiana : a community profile - Gosselink, James G. (National Coastal Ecosystems Team, Division of Biological Services, Research Development, Fish and Wildlife Service, U.S. Dept. of the Interior, 1984)

Ecology of the aspen parkland of western Canada in relation to land use - Bird, Ralph Durham, 1901 -1972 (Research Branch, Canada Dept. of Agriculture, 1961)

The ecology of Tijuana Estuary, California : a national estuarine research reserve - Kus, Barbara Elaine (NOAA Office of Coastal Resource Management, Sanctuaries and Reserves Division], 1992)

Economic relations of Wisconsin birds - King, F. H. (Franklin Hiram), 1848 -1911 (1883)

Ecosystem management : rare species and significant habitats : proceedings of the 15th Annual Natural Areas Conference - Mitchell, Richard S., 1938 - (New York State Museum, University of the State of New York, State Education Dept, 1990)

Eggs of native Pennsylvania birds : a world's fair collection - Jacobs, Joseph Warren, 1868 -1947 (Independent Job Department, 1895)

Eggs of North American birds - Maynard, C. J. (Charles Johnson), 1845 -1929 (De Wolfe, Fiske & co, 1890)

Elementary zoology - Kellogg, Vernon L. (Vernon Lyman), 1867 -1937 (H. Holt and company, 1902)

Elkhorn Slough Estuarine Sanctuary : proposed estuarine sanctuary grant award for Elkhorn Slough, Monterey County, California - National Ocean Survey. Office of Coastal Zone Management. (U.S. Govt. Print. Off, 1979)

The Emu : official organ of the Australasian Ornithologists' Union - Australasian Ornithologists' Union. (Royal Australasian Ornithologists Union, 1916)

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Ergebnisse der Hamburger Magalhaensischen Sammelreise 1892/93 - Naturhistorisches Museum in Hamburg. (L. Friederichsen, 1896)

Essays in geobotany in honor of William Albert Setchell - Goodspeed, T. H. (Thomas Harper), 1887 -1966 (University of California Press, 1936)

"Every bird;" a guide to the identification of the birds of woodland, beach and ocean. With one hundred and twenty-four line illustrations - Howe, Reginald Heber, Jr. 1875 -1932 (B. Whidden, 1896)

Exposure of marine birds to environmental pollutants - Ohlendorf, Harry M. (U.S. Dept. of the Interior, Fish and Wildlife Service, 1978)

Facts relating to the history of Groton, Massachusetts - Green, Samuel A. (Samuel Abbott), 1830 -1918 (J. Wilson and Son], 1912)

Fauna of Manitoba - Seton, Ernest Thompson, 1860 -1946 (s.n, 1909)

Fauna of New England, 11 : list of the aves - Allen, Glover M. (Glover Morrill), 1879 -1942 (Society of Natural History, 1909)

Fauna of New England - Allen, Glover M. (Glover Morrill), 1879 -1942 (Society of Natural History, 1909)

Fauna of New England. List of the Araneida. 9 - Bryant, Elizabeth B. (Elizabeth Bangs), 1875 -1953 (For Society, 1909)

A faunal investigation of Long Point and vicinity, Norfolk County, Ontario - Snyder, L. L. (Lester Lynne), 1894 - (Royal Ontario Museum of Zoology], 1931)

A faunal investigation of Prince Edward County, Ontario - Snyder, L. L. (Lester Lynne), 1894 - (University of Toronto Press, 1941)

A faunal investigation of the Sault Ste. Marie region, Ontario - Snyder, L. L. (Lester Lynne), 1894 - (Royal Ontario Museum, 1942)

A faunal investigation of western Rainy River District, Ontario - Snyder, L. L. (Lester Lynne), 1894 - (Royal Ontario Museum of Zoology], 1938)

Field and forest - Potomac-side Naturalists' Club. (Columbia Press, 1876)

Field book - Belize and Mexico (Quintana Roo, Yucatan, and Campeche), 1985-1990 (2 of 2) - Smithsonian Environmental Research Center. (1988)

Field book - Fort Pierce, Florida, April 1993 - Smithsonian Environmental Research Center. (1993)

Field book - northeast Mexico and Yucatan peninsula, August-October 1979 - Smithsonian Environmental Research Center. (1979)

Field book of birds of the Panama Canal Zone; a description on the habits, call notes and songs of the birds of the Panama Canal Zone, for the purpose of identifying them. Many of these birds are also common in Central and South America - Sturgis, Bertha Bement. (G. P. Putnam's sons, 1928)