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

Serpentum Brasiliensium species novae = ou, Histoire naturelle des espèces nouvelles de serpens : recueillies et observées pendant le voyage dans l'intérieur du Brésil dans les années 1817, 1818, 1819, 1820 - Spix, Johann Baptist von, 1781 -1826 (Typis F.S. H©bschmanni, 1824)

Sexual size differences in reptiles - Fitch, Henry S. (Henry Sheldon) 1909 -2009 (University of Kansas, 1981)

She wa yan jiu = Chinese herpetological research (Ke xue ji shu wen xian chu ban she, 1987)

sheng wu xue yu sheng wu ji shu qing bao jian suo - Qiu, Junping, Zhang Shuyong & Chen Xianqin (zhong guo ke xue ji shu chu ban she, 1994)

SIDA, contributions to botany - Mahler, William F. (W. F. Mahler, etc.], 2002)

SIDA, contributions to botany - Mahler, William F. (W. F. Mahler, etc.], 2004)

SIDA, contributions to botany - Mahler, William F. (W. F. Mahler, etc.], 2006)

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

Sinonoma Bartholomei, a glossary from a fourteenth-century manuscript in the Library of Pembroke college, Oxford - Mirfeld, John, (Clarendon press, 1882)

Siren lacertina dissertatione academica orbi erudito data - Linné, Carl von, 1707 -1778 ([publisher not identified], 1766)

Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin - Gesellschaft Naturforschender Freunde zu Berlin. (Gesellschaft Naturforschender Freunde, 1881)

Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin - Gesellschaft Naturforschender Freunde zu Berlin. (Gesellschaft Naturforschender Freunde, 1882)

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, 1870)

Sketch of the North-West of America (Printed by J. Lovell, 1870)

Smithsonian contributions to botany - Smithsonian Institution (Smithsonian Institution Press, 2014)

Smithsonian contributions to knowledge - Smithsonian Institution (Smithsonian Institution, 1890)

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, 1976)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1980)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1983)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1991)

Smithsonian herpetological information service - Smithsonian Institution (Division of Reptiles and Amphibians, U.S. National Museum, 1993)