Die Süsswasserfische der östreichischen Monarchie mit rücksicht auf die angränzenden länder - Kner, Rudolf, 1810 -1869 (W. Englmann, 1858)

Die Süsswasserfische von Mitteleuropa - Siebold, C. Th. E. von (Carl Theodor Ernst), 1804 -1885 (Verlag von Wilhelm Engelmann, 1863)

Sveriges och Norges fiskar / af W. Lilljeborg - Lilljeborg, Wilhelm, 1816 -1908 (1881)

Sveriges och Norges fiskar - Lilljeborg, Wilhelm, 1816 -1908 (W. Schultz, 1881)

Sveriges och Norges fiskar - Lilljeborg, Wilhelm, 1816 -1908 (W. Schultz, 1891)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1981)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1982)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1985)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1990)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1991)

Synopsis der Fische des Rothen Meeres - Klunzinger, Carl Benjamin, 1834 -1914 (C. Ueberreuter'she Buchdruckerei, 1870)

A synopsis of animal classification - Wilder, Harris Hawthorne, 1864 -1928 (H. Holt, 1902)

Synopsis of biological data on bonitos of the genus Sarda - United States. National Marine Fisheries Service. (Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, 1980)

Synopsis of biological data on frigate tuna, Auxis thazard, and bullet tuna, A. rochei - United States. National Marine Fisheries Service. (U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, 1981)

Synopsis of biological data on the red porgy, Pagrus pagrus (Linnaeus) - Manooch, Charles S. (Charles Samuel) (National Marine Fisheries Service, 1978)

A synopsis of the animal kingdom : together with a laboratory practicum of invertebrate zoölogy / by Harris H. Wilder - Wilder, Harris Hawthorne, 1864 -1928 (1894)

Synopsis of the classification of the animal kingdom - Nicholson, Henry Alleyne, 1844 -1899 (W. Blackwood, 1882)

Synopsis of the fishes of North America - Jordan, David Starr, 1851 -1931 (Govt. print. off, 1882)

Synopsis of the fresh water fishes of the western portion of the island of Trinidad, W. I - Gill, Theodore, 1837 -1914 (H. Baillière; [etc., etc.], 1858)

A synopsis of the general morphology of animals - Conklin, Edwin Grant, 1863 -1952 (Princeton university press, 1927)

Synopsis piscium Cubensium - Poey, Felipe, 1799 -1891 ([s.n, 1863)

Synoptic key to the phyla, classes, and orders of animals ; with particular reference to fresh-water and terrestrial forms of the moist temperate region in North America - Allee, W. C. (Warder Clyde), 1885 -1955 (The University of Chicago press, 1923)

A synoptic text-book of zoölogy, for colleges and schools - Weysse, Arthur Wisswald, 1867 - (Macmillan, 1904)

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

A systematic monograph of the flatfishes (Heterosomata) - Norman, J. R. (John Roxborough), 1898 -1944 (1934)

Systematic review and cranial osteology of Petersius with redescription of P. conserialis (Teleostei: Alestidae) from the Rufiji and Ruvu rivers of Tanzania - Melo, Bruno F. (American Museum of Natural History, 2022)

A systematic revision of the neotropical catfish family Ageneiosidae (Teleostei: Ostariophysi: Siluriformes) / by Stephen Joseph Walsh - Walsh, Stephen Joseph, 1957 - (1990)

Systematics and biogeography of the genus Gambusia (Cyprinodontiformes, Poecilidae) - Rauchenberger, Mary. (American Museum of Natural History, 1989)

Systematics of Cyprinodon higuey n. sp. and Cyprinodon jamaicensis Fowler from the Greater Antilles (Teleostei, Cyprinodontiformes) - Lydeard, Charles (American Museum of Natural History, 1990)

Systematics of the genus Otothyris Myers 1927, with comments on geographic distribution (Siluriformes, Loricariidae, Hypoptopomatinae) - Garavello, Julio Cesar (American Museum of Natural History, 1998)

Systematics of the West Indian lizard genus Leiocephalus (Squamata: Iguania: Tropiduridae) - Pregill, Gregory K. (Museum of Natural History, The University of Kansas, 1992)

Systematische Phylogenie ... - Haeckel, Ernst, 1834 -1919 (G. Reimer, 1895)

Systematische phylogenie - Haeckel, Ernst, 1834 -1919 (Georg Reimer, 1895)

The Tanganyika problem; an account of the researches undertaken concerning the existence of marine animals in Central Africa - Moore, John Edward S. (Hurst and Blackett, limited, 1903)

Természetrajzi Füzetek kiadja a Magyar nemzeti Muzeum - Magyar Nemzeti Múzeum. (Franklin-társulat nyomdája [etc.], 1881)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1983)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1989)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1994)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 2001)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 2008)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 2009)

A text-book in general zoölogy - Herrick, Glenn W. (Glenn Washington), 1870 -1965 (American Book Company, 1907)

A text-book in general zoölogy - Herrick, Glenn W. (Glenn Washington), 1870 -1965 (American book company, 1922)

A text-book of agricultural zoology - Theobald, Fred. V. (Frederick Vincent), 1868 -1930 (W. Blackwood and sons, 1913)

A text-book of agricultural zoology - Theobald, Fred. V. (Frederick Vincent), 1868 -1930 (W. Blackwood and Sons, 1899)

A text-book of botany - Strasburger, Eduard, 1844 -1912 (Macmillan, 1912)

Text-book of elementary zoology, for secondary educational institutions - Galloway, Thomas Walton, 1866 -1929 (Blakiston, 1910)

Text-book of embryology - Heape, Walter, 1855 -1929 (Macmillan, 1914)

Text-book of embryology - Kerr, John Graham, 1869 -1957 (MacMillan, 1919)

Text-book of embryology - Heape, Walter, 1855 -1929 (Macmillan, 1919)

A text book of materia medica, being an account of the more important crude drugs of vegetable and animal origin, designed for students of pharmacy and medicine - Greenish, Henry G. 1855 -1933 (Churchill, 1920)

Text-book of palaeontology - Eastman, Charles Rochester, 1868 -1918 (Macmillan, 1902)