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Proceedings of the United States National Museum - Smithsonian Institution (Smithsonian Institution Press, [etc.], 1966)

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 : an index to the artists, 1848-1900 - Johnson, Bryan R., 1956 - (Garland, 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)

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Publicações Avulsas do Museu Paraense Emílio Goeldi (Museu Paraense Emílio Goeldi, 1974)

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Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1968)

Quarterly journal of the Florida Academy of Sciences - Florida Academy of Sciences. (Florida Academy of Sciences, 1972)

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Raptor electrocutions and associated fire hazards in the Snake River Birds of Prey National Conservation Area - Lehman, Robert N. ([Idaho Bureau of Land Management], 2002)

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Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1973)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1974)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1975)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1976)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1977)

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

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1979)

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1980)

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

Raptor research - Raptor Research Foundation. (Raptor Research Foundation, 1982)

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

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

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Reading Naturalist. Reading - Reading Natural History Society.

Readings in mammalogy / selected from the original literature and introduced with comments - Anderson, Sydney, 1927 -2018 (Museum of Natural History, University of Kansas, 1970)

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Records of the South Australian Museum - South Australian Museum (Published under the authority of the board of governors and edited by the museum director, 1946)

Records of the South Australian Museum - South Australian Museum (Published under the authority of the board of governors and edited by the museum director, 1967)

Records of the South Australian Museum - South Australian Museum (Published under the authority of the board of governors and edited by the museum director, 1972)

Records of the South Australian Museum - South Australian Museum (Published under the authority of the board of governors and edited by the museum director, 1973)

Records of the South Australian Museum - South Australian Museum (Published under the authority of the board of governors and edited by the museum director, 1977)

Records of the South Australian Museum - South Australian Museum (Published under the authority of the board of governors and edited by the museum director, 1983)

Records of the South Australian Museum - South Australian Museum (Published under the authority of the board of governors and edited by the museum director, 1986)

Records of the South Australian Museum - South Australian Museum (Published under the authority of the board of governors and edited by the museum director, 1998)

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Records of the Western Australian Museum - Western Australian Museum (Western Australian Museum, 2008)

Records of the Western Australian Museum - Western Australian Museum (Western Australian Museum, 2017)

Recovery plan for the northern spotted owl - draft - U.S. Fish; Wildlife Service ([U.S. Department of the Interior], 1992)

Reise in Ostafrika in den Jahren 1903-1905 : mit Mitteln der Hermann und Elise geb. Heckmann Wentzel-Stiftung : Wissenschaftliche Ergebnisse - Voeltzkow, Alfred, 1860 -1946 (E. Schweizerbartsche Verlagsbuchhandlung, 1923)

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

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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, 1933)

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, 1945)

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, 1946)

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, 1957)

Report on the progress and condition of the United States National Museum - United States National Museum (U.S. Govt. Print. Off, 1907)

Response of juvenile raptors to DDT in the diet - Seidensticker, John. (1966)

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Revista do Museu Paulista - Museu Paulista (O Museu, 1936)

Revista do Museu Paulista - Museu Paulista (O Museu, 1938)

Revue française d'ornithologie - Société ornithologique et mammalogique de France. (L. Denise, 1915)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1956)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1963)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1964)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1970)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1971)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1976)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1982)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1992)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 1999)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 2003)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 2011)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 2012)

Revue suisse de zoologie - Muséum d'histoire naturelle de Genève. (Kundig [etc.], 2017)

Richard Archbolds Madagascar journal : Mission zoologique franco-anglo-américaine - American Museum of Natural History (1929)

Roosevelt wild life annals - New York State College of Forestry at Syracuse University. Roosevelt Wild Life Forest Experiment Station. (Roosevelt Wild Life Forest Experiment Station, 1932)

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San Francisco Zoological Gardens expanded partnership annual report for ... - San Francisco (Calif.). Recreation; Park Commission. (San Francisco Zoological Society, 1999)