Reptiles of the world: tortoises and turtles, crocodilians, lizards and snakes of the eastern and western hemispheres - Ditmars, Raymond Lee, 1876 -1942 (Sturgis and Walton, 1910)

Reptilia and Batrachia - Boulenger, George Albert 1858 -1937 (Taylor and Francis, 1890)

Reptilien und Amphibien - Werner, Franz, 1867 -1939 (G.J. Göschen'sche Verlagshandlung, 1908)

Results of the Archbold Expeditions. No. 112, The snakes of the Huon Peninsula, Papua New Guinea - McDowell, Samuel Booker. (American Museum of Natural History, 1984)

Results of the Swedish zoological expedition to Egypt and the White Nile, 1901, under the direction of L.A. Jägerskiöld - Jägerskiöld, Leonard A., 1867 -1945 (Library of the Royal University of Uppsala, 1911)

Return / British Museum - British Museum (Natural History) (British Museum, 1856)

Return / British Museum - British Museum (Natural History) (British Museum, 1901)

Revised list of the vertebrated animals now or lately living in the gardens of the Zoological Society of London. Supplement containing additions received in 1872, 1873, and 1874 - Zoological Society of London. (For the Society, 1875)

Revised list of the vertebrated animals now or lately living in the gardens of the Zoological society of London. 1872 - Sclater, Philip Lutley, 1829 -1913 (Printed for the Society, 1872)

Révision de la famille des ixodidés - Neumann, G (1896)

Revue des travaux scientifiques - France. Ministère de l'Instruction publique (Imprimerie nationale, 1888)

Revue des travaux scientifiques - France. Ministère de l'Instruction publique (Imprimerie nationale, 1896)

Revue méthodique et critique des collections déposées dans cet établissement - Rijksmuseum van Natuurlijke Historie te Leiden. (Rijksmuseum van Natuurlijke Historie, 1898)

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Revue zoologique africaine (Hayez, 1916)

The royal natural history - Lydekker, Richard, 1849 -1915 (Frederick Warne & Co, 1896)

The royal natural history - Lydekker, Richard, 1849 -1915 (Frederick Warne & Co, 1893)

The royal natural history - Lydekker, Richard, 1849 -1915 (F. Warne, 1896)

Schlangen und Schlangenfeinde : der Schlangenkunde - Lenz, Harald Othmar, 1799 -1870 (E.F. Thienemann, 1870)

Schlangen und Schlangenfeinde - Lenz, Harald Othmar, 1799 -1870 (E.F. Thienemann, 1870)

Schlangenkunde / von Harald Othmar Lenz - Lenz, Harald Othmar, 1799 -1870 (Beckersche Buchhandlung, 1832)

Science - American Association for the Advancement of Science. ([s.n.], 1880)

Scientific results of the Zoological Expedition to British East Africa and Uganda made by Prof. V. Dogiel and I. Sokolow in the year 1914 - Dogel, V. A. (Valentin Aleksandrovich), 1882 -1955 (1914)

Septimana philosophica : qua aenigmata avreola de omni natvrae genere a Salomone Israëlitarum sapientissimo rege, & Arabiae regina Saba, nec non Hyramo, Tyri principe, sibi inuicem in modum colloquii proponuntur & enodantur ... - Maier, Michael, 1568 -1622. (Typis Hartmanni Palthenii, 1620)

Serpentes do Brasil - Prado, Alcides (Sao Paulo, 1945)

Significant Trade in Wildlife: a review of selected species in CITES Appendix II. Volume 2: reptiles and invertebrates (1988)

Sitzungsberichte. Abt. 1, Mineralogie, Krystallographie, Botanik, Physiologie der Pflanzen, Zoologie, Paläontologie, Geologie, physische Geographie und Reisen - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Kommission bei A. Hölder, 1907)

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, 1863)

Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe. Abt. 1, Mineralogie, Botanik, Zoologie, Geologie und Paläontologie - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof- und Staatsdruckerei in Commission bei C. Gerold's Sohn, 1881)

Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe - Kaiserl. Akademie der Wissenschaften in Wien. Mathematisch-Naturwissenschaftliche Klasse. (K.-K. Hof-und Staatsdruckerei in Commission bei Karl Gerold's Sohn, 1861)

Sketches of the natural history of Ceylon : with narratives and anecdotes illustrative of the habits and instincts of the mammalia, birds, reptiles, fishes, insects, etc. including a monograph of the elephant ... - Tennent, James Emerson, Sir, 1804 -1869 (Longman, Green, Reader, and Dyer, 1868)

Sketches of the natural history of Ceylon : with narratives and anecdotes illustrative of the habits and instincts of the mammalia, birds, reptiles, fishes, insects, &c. : including a monograph of the elephant and a description of the modes of capturing and training it : with engravings from original drawings - Tennent, James Emerson, Sir, 1804 -1869 (Longman, Green, Longman, and Roberts, 1861)

Smithsonian contributions to knowledge - Smithsonian Institution (Smithsonian Institution, 1916)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1968)

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 herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1994)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1997)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 2004)

Smithsonian scientific series - Smithsonian Institution (Smithsonian Institution Series, Inc, 1930)