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

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

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1973)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1983)

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, 1986)

A synonymic catalogue of Lepidoptera Heterocera. (Moths) : Vol. 1. Sphinges and bombyces - Kirby, W. F. (William Forsell), 1844 -1912 (Gurney & Jackson, 1892)

A synonymic checklist of the Hexapoda of the New Zealand sub-region : the smaller orders - Auckland Institute; Museum. (Auckland Institute and Museum, 1977)

Synopsis der mitteleuropaïschen flora - Graebner, Paul, 1871 -1933 (W. Engelmann, 1896)

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

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, 1835)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall, Angel Court, Skinner Street, 1836)

Synopsis of the contents of the British Museum - British Museum (Printed by G. Woodfall and Son, 1824)

Synopsis of the contents of the British Museum - British Museum ([the Museum], 1823)

Synopsis of the contents of the British Museum - British Museum ([The Museum], 1827)

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)

A synthesis of evolutionary theory - Ross, Herbert H. (Herbert Holdsworth), 1908 -1978 (Prentice-Hall, 1962)

The system of nature: an essay - Newman, Edward, 1801 -1876 (J. Van Voorst, 1843)

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

Systematic and biogeographical relationships of some Dugesia species (Tricladida, Paludicola) from Central and South America - Ball, Ian R. (American Museum of Natural History, 1971)

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)

Systematic database of Musca names (Diptera) : a catalog of names associated with the genus-group name Musca Linnaeus, with information on their classification, distribution, and documentation - Thompson, F. Christian. (Koeltz Scientific Books, 1993)

Systematic ichnology of the Late Ordovician Georgian Bay formation of southern Ontario, eastern Canada - Royal Ontario Museum. (Royal Ontario Museum, 1998)

The systematic position of the Orthoptera in relation to other orders of insects - Packard, A. S. (Alpheus Spring), 1839 -1905 (Govt. Print. Off.], 1883)

A systematic study of the nearctic larvae of the Hydropsyche morosa group (Trichoptera : Hydropsychidae) - Royal Ontario Museum. (Royal Ontario Museum, 1986)

Systematics in Agriculture Canada at Ottawa, 1886-1986 - Canada. Agriculture Canada (Biosystematics Research Centre, Agriculture Canada, 1986)

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)