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The structure and classification of birds - Beddard, Frank E. (Frank Evers), 1858 -1925 (Longmans, Green, and co, 1898)

Studies in bird migration - Clarke, William Eagle, 1853 -1938 (Gurney and Jackson; [etc., etc.], 1912)

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Studies on Cenozoic vertebrates of western North America ... - Colbert, Edwin H. 1905 -2001 (Carnegie Institution of Washington, 1938)

A study of the incubation periods of birds; what determines their lengths - Bergtold, W. H. (William Harry), 1865 -1956 (The Kendrick-Bellamy co, 1917)

Supplement to the birds of Essex County, Massachusetts - Townsend, Charles Wendell, 1859 -1934 (The Club, 1920)

Supplement to the 'Birds of New Zealand' - Buller, Walter Lawry, Sir, 1838 -1906 (The author, 1905)

A supplement to the birds of Norfolk and Lord Howe Islands : to which is added those birds of New Zealand not figured by Buller - Mathews, Gregory Macalister Gregory Macalister 1876 -1949 (H.F. & G. Witherby, 1936)

A supplement to The birds of Rhode Island - Howe, Reginald Heber, Jr. 1875 -1932 ([s.n.], 1903)

A supplementary list of the marine fishes of India : with descriptions of 2 new genera and 8 new species - Alcock, A. (Alfred), 1859 -1933 (Asiatic Society, 1897)

Die Süsswasserfauna Deutschlands. Eine Exkursionsfauna - Brauer, August, 1863 -1917 (G. Fischer, 1909)

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Die Süsswasserfauna Deutschlands. Eine Exkursionsfauna - Brauer, August, 1863 -1917 (G. Fischer, 1910)

Synopsis of the birds of Vancouver Island - Brown, Robert, 1842 -1895 (s.n, 1868)

Synopsis of the parasites of vertebrates of Canada : cestodes of waterfowl (Anseriformes) - Alberta. Animal Health Division. (Alberta Agriculture, Animal Health Division, 1990)

Synopsis of the parasites of vertebrates of Canada : nematodes of birds - Kennedy, Murray James, 1943 - (Alberta Agriculture, Animal Health Division, 1990)

A synopsis on the anatidae or duck tribe - Eyton, T. C. (Thomas Campbell), 1809 -1880 (R. Hobson, 1869)

System der Ornithologie Westafrica's - Hartlaub, Gustav, 1814 -1900 (C. Schünemann, 1857)

Systema avium Australasianarum = A systematic list of the birds of the Australasian region - American Ornithologists' Union. (British Ornithologists' Union, 1927)

A systematic list of the birds of California - Grinnell, Joseph, 1877 -1939 (Cooper Ornithological Club, 1912)

Systematische Uebersicht der Vögel Nord-Ost-Afrika's : nebst Abbildung und Beschreibung von fünfzig Theils unbekannten, Theils noch nicht bildlich dargestellten Arten - Rüppell, Eduard, 1794 -1884 (In Commission der S. Schmerber'schen Buchhandlung (nachfolger H. Keller), 1845)

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Through the Mackenzie Basin : a narrative of the Athabasca and Peace River Treaty Expedition of 1899 - MacFarlane, R. (Roderick), 1833 -1920 (W. Briggs, 1908)

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Tierbau und tierleben in ihrem zusammenhang betrachtet - Doflein, Franz, 1873 -1924 (B. G. Teubner, 1914)

Tierleben : allgemeine Kunde des Tierreichs - Brehm, Alfred Edmund, 1829 -1884 (Bibliographisches Institut, 1911)

Die Tierwelt der Schweiz in der Gegenward und in der Vergangenheit Band 1 Wirbeltiere - Goeldi, Emílio Augusto, 1859 -1917 (A. Francke, 1914)

Die Tierwelt Schlesiens - Pax, Ferdinand, 1885 -1964 (G. Fischer, 1921)

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Tori - Nihon Chogakkai (The Ornithological Society of Japan, 1918)

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A treatise on zoology - Lankester, E. Ray Sir, (Edwin Ray), 1847 -1929 (A. and C. Black, 1903)

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