Reisen nach dem Nordpolarmeer in den Jahren 1870 und 1871 - Heuglin, Theodor von, 1824 -1876 (G. Westermann, 1874)

Reisen und Forschungen im Amur-Lande in den Jahren 1854-1856 - Schrenck, Leopold von, 1826 -1894 (Commissionäre der K. Akademie der Wissenschaften, 1858)

Relationships of birds and spruce budworms : literature review and annotated bibliography - Crawford, Hewlette S. (1982)

Report - British Columbia Provincial Museum. (Printed by W.H. Cullin, 1963)

Report and proceedings of the Chester Society of Natural Science, Literature and Art - Chester Society of Natural Science Literature; Art. (1898)

Report of the British Association for the Advancement of Science - British Association for the Advancement of Science. (1934)

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Report of the Brown-Harvard Expedition to Nachvak, Labrador, 1900 - Delabarre, Edmund Burke, 1863 - (Preston & Rounds Co, 1902)

Report of the Brown-Harvard expedition to Nachvak, Labrador, 1900 - Delabarre, Edmund Burke, 1863 - (Preston & Rounds co, 1902)

Report of the Canadian Arctic Expedition 1913-18 (F. A. Acland, Printer to the King, 1919)

Report of the Canadian Arctic Expedition 1913-18 (F. A. Acland, Printer to the King, 1913)

Report of the cruise of the revenue marine steamer Corwin in the Arctic Ocean in the year 1885 - Townsend, Charles Haskins, 1859 -1944 (Govt. Print. Off, 1887)

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

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 - Pennsylvania. Ornithologist. (E. K. Meyers, state printer, 1890)

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)

Report on the birds of Pennsylvania : with special reference to the food habits, based on over three thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1888)

Report on the birds of Pennsylvania. With special reference to the food-habits, based on over three thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1888)

Report on the birds of Pennsylvania; with special reference to the food habits, based on over four thousand stomach examinations - Pennsylvania. Ornithologist. (E.K. Meyers, State Printer, 1890)

Report on the migration of birds - Harvie-Brown, J. A. (John Alexander), 1844 -1916 (1880)

Report on the proceedings of the United States expedition to Lady Franklin Bay, Grinnell Land - Greely, A. W. (Adolphus Washington), 1844 -1935 (G.P.O, 1888)

Report on the progress and condition of the U.S. National Museum for the year ending June 30 ... - United States National Museum (G.P.O, 1921)

Report upon natural history collections made in Alaska : between the years 1877 and 1881 - Bean, Tarleton H. (Tarleton Hoffman), 1846 -1916 (Government Printing Office, 1887)

Report upon natural history collections made in Alaska between the years 1877 and 1881 - Bean, Tarleton H. (Tarleton Hoffman), 1846 -1916 (Govt. Print. Off, 1887)

A report upon the condition of affairs in the territory of Alaska - Coues, Elliott, 1842 -1899 (Govt. Print. Off, 1875)

Reports (King's Printer, 1917)

A reprint of the North American zoology, by George Ord. Being an exact reproduction of the part originally compiled by Mr. Ord for Johnson & Warner, and first published by them in their 2d American ed. of Guthrie's geography, in 1815. Taken - Ord, George, 1781 -1866 (Pub. by the editor, 1894)

A review of Prof. George H. Perkins' "A preliminary list of the birds found in Vermont" - Howe, Reginald Heber, Jr. 1875 -1932 (s.n.], 1902)

A revised catalogue of the birds of Kansas : with descriptive notes of the nests and eggs of the birds known to breed in the state - Goss, N. S. (Nathaniel S.) (Kansas Publishing House, 1886)

A revised catalogue of the birds of Kansas. With descriptive notes of the nests and eggs of the birds known to breed in the state - Goss, N. S. (Nathaniel S.) (Kansas Publishing House, 1886)

A revised list of the birds of Brookline, Massachusetts - Howe, Reginald Heber, Jr. 1875 -1932 (1902)

Revue critique de l'Ornithologie Européenne de M. De Selys Longchamps - Bonaparte, Charles-Lucien, 1803 -1857 (1850)

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Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1896)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1894)

Rivista italiana di scienze naturali : periodico mensile premiato alle esposizioni nazionali di Palermo e di Milano ed a quella internazionale di Chicago (Ufficio, 1903)

Rural New Yorker - Moore, D. D. T. (Rural Pub. Co. [etc.], 1895)

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Sand dunes and salt marshes - Townsend, Charles Wendell, 1859 -1934 (D. Estes & company, 1913)

Sand dunes and salt marshes - Townsend, Charles Wendell, 1859 -1934 (Page Company Publishers, 1913)

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Sandgrouse - Ornithological Society of the Middle East. (OSME, 2007)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2008)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2009)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2010)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2012)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2014)

Sandgrouse - Ornithological Society of the Middle East. (OSME, 2015)

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Die Schwalbe : Berichte des Comité's für ornithologische Beobachtungs-Stationen in Österreich - Kaiserlich-Königliche Zoologisch-Botanische Gesellschaft in Wien (K.K. Zoolog.-Botan. Gesellschaft, 1898)

Science - American Association for the Advancement of Science. ([s.n.], 1893)

Science - American Association for the Advancement of Science. ([s.n.], 1900)

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Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1979)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1980)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1981)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1982)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1983)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1984)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1985)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1986)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1987)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1988)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1989)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1990)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1991)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1992)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1993)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1994)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1995)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1996)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1997)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1998)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1999)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 2000)

Scottish bird report - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 2001)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1959)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1960)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1958)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1961)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1962)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1966)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1968)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1970)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1972)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1974)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1976)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1978)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1980)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1982)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1986)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1990)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1993)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1995)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 1997)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 2002)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 2009)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 2011)

Scottish birds - Scottish Ornithologists' Club (Scottish Ornithologists' Club, 2012)

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The Scottish naturalist (T. Buncle & Co. [etc.], 1928)

The Scottish naturalist (T. Buncle & Co. [etc.], 1930)

Scottish Naturalist - Scottish Natural History Library. (Scottish Natural History Library, 1994)

The Scottish naturalist (T. Buncle & Co. [etc.], 1949)

The Scottish naturalist (T. Buncle & Co. [etc.], 1951)

The Scottish naturalist (T. Buncle & Co. [etc.], 1953)

The Scottish naturalist (T. Buncle & Co. [etc.], 1955)

The Scottish naturalist (T. Buncle & Co. [etc.], 1956)