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

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)

Systema helminthum / auctore Carolo Mauritio Diesing ... Sumptibus Academiae caesareae scientiarum - Diesing, Karl Moritz, 1800 -1867 (W. Braumüller, 1851)

A systematic catalogue of British insects : being an attempt to arrange all the hitherto discovered indigenous insects in accordance with their natural affinities. Containing also the references to every English writer on entomology, and to the principal foreign authors. With all the published British genera to the present time - Stephens, James Francis, 1792 -1853 (Baldwin and Cradock, 1829)

A systematic catalogue of British insects : being an attempt to arrange all the hitherto discovered indigenous insects in accordance with their natural affinities - Stephens, James Francis, 1792 -1853 (Baldwin and Cradock, 1829)

Systematics of the short-tailed whipscorpion genus Stenochrus Chamberlin, 1922 (Schizomida, Hubbardiidae), with descriptions of six new genera and five new species - Prendini, Lorenzo (American Museum of Natural History, 2019)

Systematische Beschreibung der bekannten europäischen zweiflügeligen Insekten - Loew, H. (Hermann), 1807 -1879 (F. W. Forstmann, 1818)

Systematische Beschreibung der bekannten europäischen zweiflügeligen Insekten - Meigen, Johann Wilhelm, 1764 -1845 (Bei Friedrich Wilhelm Forstmann : Gedrukt bei Beaufort Sohn, 1818)

Systematische Beschreibung der bekannten europäischen zweiflugeligen Insekten - Meigen, Johann Wilhelm, 1764 -1845 (s.n, 1826)

Systematische Beschreibung der bekannten europäischen zweiflugeligen Insekten - Meigen, Johann Wilhelm, 1764 -1845 (s.n, 1838)

Systematische Beschreibung der bekannten europäischen zweiflügeligen Insekten - Meigen, Johann Wilhelm, 1764 -1845 (Bei Friedrich Wilhelm Forstmann : Gedrukt bei Beaufort Sohn, 1826)

Systematische Beschreibung der bekannten europäischen zweiflügeligen Insekten - Meigen, Johann Wilhelm, 1764 -1845 (Bei Friedrich Wilhelm Forstmann : Gedrukt bei Beaufort Sohn, 1830)

Systematische Beschreibung der bekannten europäischen zweiflügeligen Insekten - Meigen, Johann Wilhelm, 1764 -1845 (Bei Friedrich Wilhelm Forstmann : Gedrukt bei Beaufort Sohn, 1838)

Systematische Übersicht der Fossilen Myriopoden, Arachnoideen und Insekten - Scudder, Samuel Hubbard, 1837 -1911 (R. Oldenbourg, 1885)

Tableau encyclopédique et méthodique des trois règnes de la nature. Insectes - Latreille, P. A. (Pierre André), 1762 -1833 (Chez Panckoucke, 1818)

Tableaux synoptiques de zoognosie : publiés à l'usage de ses élèves à l'Université Impériale de Moscou - Fischer von Waldheim, Gotthelf, 1771 -1853 (de l'Imprimerie de l'Université Impériale, 1808)

Tables générales des publications de la Société entomologique de Russie : ainsi que des articles, des synopsis et des formes nouvelles y contenues 1859-1908 - Russkoe entomologicheskoe obshchestvo (L'Société, 1910)

Tabular view of the primary divisions of the animal kingdom, intended to serve as an outline of an elementary course of recent zoology (cainozoology), or the natural history of existing animals - Grant, Robert Edmond, 1793 -1874 (Walton and Maberly, 1861)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1955)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1962)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1981)

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 in general zoölogy - Linville, Henry R. (Henry Richardson), 1866 -1941 (Ginn, 1906)

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 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 comparative anatomy - Lang, Arnold, 1855 -1914 (Macmillan and Co, 1891)

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)