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Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. Abt. 1, Mineralogie, Botanik, Zoologie, Anatomie, Geologie und Paläontologie - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Commission bei Carl Gerold's Sohn, 1867)

Skandinaviens fugle, med særligt hensyn til Danmark og de nordlige bilande - Grönvold, Henrik, 1858 -1940 (L.A. Jørgensen, 1875)

Sketch-book of British birds - Sharpe, Richard Bowdler, 1847 -1909 (Society for Promoting Christian Knowledge, 1898)

Smithsonian contributions to paleobiology - Smithsonian Institution (Smithsonian Institution Press, 1999)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1986)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1989)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1878)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1882)

Smithsonian miscellaneous collections - Smithsonian Institution (Smithsonian Institution, 1962)

Somaliland; being an account of two expeditions into the far interior, together with a complete list of every animal and bird known to inhabit that country, and a list of the reptiles collected by the author - Peel, C. V. A. (F.E. Robinson, 1900)

Some Chinese vertebrates ... - Bangs, Outram, 1862 -1932 (Printed for the Museum, 1912)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1969)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1970)

Storia naturale degli uccelli che nidificano in Lombardia : ad illustrazione della raccolta ornitologica dei fratelli ercole ed Ernesto Turati - Bettoni, Eugenio. (coi tipi del pio Instituto del Patronato, 1868)

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Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1874)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1875)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1876)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1878)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1879)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1880)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1887)

Stray feathers. Journal of ornithology for India and its dependencies - Hume, Allan Octavian, 1829 -1912 (s.n, 1873)

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

The student's natural history - Baird, William, 1803 -1872 (C. Griffin, 1863)

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

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

Stuttgarter Beiträge zur Naturkunde. Serie A, Biologie - Staatliches Museum für Naturkunde in Stuttgart. (Staatliches Museum für Naturkunde, 1997)

Supplement to The birds of Lincolnshire, 1954-1968 - Cornwallis, R. K. (Richard K.) (Lincolnshire Naturalists' Union, 1970)

A survey and record of Woolwich and West Kent containing descriptions and records, brought up-to-date, of geology, botany, zoology, archaeology and industries of the district, with a brief photographic commentary, in commemoration of the 12th Annual Congress, 1907, of the South Eastern Union of Scientific Societies - Grinling, C. H. (Labour Representation Print. Co, 1909)

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

Die Süsswasserfauna Deutschlands. Eine Exkursionsfauna - Brauer, August, 1863 -1917 (G. Fischer, 1911)

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

Svenska foglarna - Åkerlund, Peter, 1835 -1871 (Tryckt hos J. & A. Riis, 1883)

Synonomik der europäischen Brutvögel und Gäste : systematisches Verzeichniss nebst Angaben über die geographische Verbreitung der Arten unter besonderer Berücksichtigung der Brutverhältnisse - Rey, Eugène, 1838 -1909 (G. Schwetschke'scher Verlag, 1872)

System of ophthalmology - Duke-Elder, Stewart, Sir, 1898 -1978 (Mosby, 1958)

Systema avium - Wagler, Johann Georg, 1800 -1832 (sumtibus J.G. Cottae, 1827)

Systematische Aufzählung der Vögel Würtembergs, mit Angabe ihrer Aufenthaltsörter und ihrer Strichzeit - Landbeck, Christian Ludwig, 1807 -1890 (1834)

Systematische übersicht der Vögel Bayerns mit Rucksicht auf das örtliche und quantitative Vorkommen der Vögel, ihre Lebensweise, ihren zug und ihre Abänderungen - Blasius, Rudolf, 1842 -1907 (Kommissionsverlag von R. Oldenbourg, 1891)

Systematische Übersicht der Vögel Nord-Ost-Afrika's : mit Einschluss der arabischen Küste des rothen Meeres und der Nil-Quellen-Länder südwärts bis zum 4. Grade nördl. Breite - Heuglin, Theodor von, 1824 -1876 (K. Akademie der Wissenschaften, 1856)

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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Transactions of the Norfolk and Norwich Naturalists' Society - Norfolk; Norwich Naturalists' Society. (Norfolk and Norwich Naturalists' Society, 2001)

Transactions of the Norfolk and Norwich Naturalists' Society - Norfolk; Norwich Naturalists' Society. (Norfolk and Norwich Naturalists' Society, 2002)

Transactions of the Norfolk and Norwich Naturalists' Society - Norfolk; Norwich Naturalists' Society. (Norfolk and Norwich Naturalists' Society, 2003)