Special reports of state geologist, 1860 - Geological Survey of California. (John Wilson & Son, 1880)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1952)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1953)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1954)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1956)

Special scientific report. Wildlife - U.S. Fish; Wildlife Service (The Service, 1982)

Species Blancoanae :a critical revision of the Philippine species of plants described by Blanco and by Llanos - Merrill, Elmer D. (Elmer Drew), 1876 -1956 (Bureau of Printing, 1918)

Species plantarum, exhibentes plantas rite cognitas ad genera relatas cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus secundum systema sexuale digestas - Link, Heinrich Friedrich, 1767 -1851 (G.C. Nauck, 1833)

Spixiana. Supplement - Zoologische Staatssammlung München. (Zoologische Staatssammlung München, 1981)

The standard cyclopedia of horticulture; a discussion, for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States and Canada for ornament, for fancy, for fruit and for vegetables; with keys to the natural families and genera, descriptions of the horticultural capabilities of the states and provinces and dependent islands, and sketches of eminent horticulturists - Bailey, L. H. (Liberty Hyde), 1858 -1954 (The Macmillan Co.; [etc., etc.], 1916)

The standard cyclopedia of horticulture; a discussion, for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States and Canada for ornament, for fancy, for fruit and for vegetables; with keys to the natural families and genera, descriptions of the horticultural capabilities of the states and provinces and dependent islands, and sketches of eminent horticulturists - Bailey, L. H. (Liberty Hyde), 1858 -1954 (Macmillan, 1919)

Station bulletin - New Hampshire Agricultural Experiment Station. (Agricultural Experiment Station, University of New Hampshire, 1948)

The Stephen A. Forbes collections at the Illinois Natural History Survey, 1858-1994 : Annual report 1994 - Forbes, Stephen Alfred, 1844 -1930 (Illinois Natural History Survey, 1994)

Stephen T. Olney and John Torrey correspondence, 1845-1871 - Olney, Stephen T. (Stephen Thayer), 1812 -1878 (1846)

Stephen T. Olney and John Torrey correspondence, 1845-1871 - Olney, Stephen T. (Stephen Thayer), 1812 -1878 (1869)

Stockholmstraktens växter : förteckning över fanerogamer och kärlkryptogamer med fyndorter och frekvensuppgifter - Andersson, Gunnar, 1865 -1928 (P. A. Norstedt, 1914)

The story of plant life in the British Isles; types of the common natural orders - Horwood, A. R. (Arthur Reginald), 1879 -1937 (J. & A. Churchill, 1914)

The student's flora of the British Islands - Hooker, Joseph Dalton, 1817 -1911 (Macmillan and Co, 1870)

The student's flora of the British islands - Hooker, Joseph Dalton, 1817 -1911 (Macmillan, 1884)

Studies in microscopical science - Cole, Arthur C. (Bailliere, Tindall, and Cox, 1883)

Studies of the types of various species of the genus Carex. Notes on Carex.-xi - Bailey, L. H. (Liberty Hyde), 1858 -1954 (1889)

A study of the life history and ecology of the round-tailed muskrat (Neofiber alleni True) in North Central Florida - Birkenholz, Dale Eugene, 1931 - (1962)

A study of the vegetation of southeastern Washington and adjacent Idaho - Weaver, John E. (John Ernest),‏ ‎ 1884 -1966 (1917)

su lian hei long jiang liu yu ze ya-bu lei ya qin gyuan de si liao zi yuan 苏联黑龙江流域泽雅-布列雅平原的饲料资源 - Koret︠s︡kai︠a︡, L. A. (ke xue chu ban she chu ban 科学出版社出版, 1958)

Successions of vegetation in Boulder Park, Colorado - Robbins, Wilfred William, 1884 -1952 (1918)

Suggested guide for chemical control of weeds - Danielson, L. L. (Loran Leroy), 1913 - (Agricultural Research Service, U.S. Dept. of Agriculture, 1961)

Sumatra, zijne plantenwereld en hare voortbrengselen - Miquel, Friedrich Anton Wilhelm 1811 -1871 (C.G. van der Post, 1862)

A summary of the prevalence of plant diseases in the Dominion of Canada, 1920-1924 - Canada. Department of Agriculture. (F.A. Acland, Printer to the King's Most Excellent Majesty, 1926)

Summer in a bog - Sharp, Katharine (Emily) Dooris, 1846 -1935 (Stewart & Kidd, 1913)

Die Sumpf- und Wasserpflanzen : ihre Beschreibung, Kultur und Verwendung - Mönkemeyer, Wilhelm, 1862 -1938 (Paul Parey, 1897)

A supplement to Baines' Flora of Yorkshire, with a map : part first, the flowering plants and ferns by John Gilbert Baker : part second, the mosses of the county by John Nowell - Baker, John Gilbert, 1834 -1920 (William Pamplin, 1854)

A supplement to F. Hamilton Davey's Flora of Cornwall - Thurston, Edgar, 1855 -1935 (Oscar Blackford, Royal Printeries, 1922)

Supplement to the Catalogue of Arkansas plants - Buchholz, J. T. (John Theodore), 1888 -1951 (Academy of Science of St. Louis], 1926)

A supplementary list of Chinese flowering plants, 1904-1910 - Dunn, S. T. (Stephen Troyte), 1868 -1938 (1911)

Supplementum primum Prodromi florae Novae Hollandiae: exhibens proteaceas novas quas in Australasia legerund, DD. Baxter, Caley, Cunningham, Freser et Sieber - Brown, Robert, 1773 -1858 (Typis R. Taylor, 1830)

Surface water acidification literature review - Alberta Government/Industry Acid Deposition Research Program. (Acid Deposition Research Program, 1987)

A survey and record of Woolwich and West Kent containing descriptions and records, brought up-to-date, of geology, botany, zoology, archaeology and industries of the district, with a brief photographic commentary, in commemoration of the 12th Annual Congress, 1907, of the South Eastern Union of Scientific Societies - Grinling, C. H. (Labour Representation Print. Co, 1909)

Survey for Psoralea hypogaea in the Great Falls Resource Area, Lewistown District, Bureau of Land Management, Montana - United States. Bureau of Land Management. (Montana Natural Heritage Program, 1994)

A survey of Canadian plants in relation to their environment - Adams, John, 1872 -1950 (Canada Dept. of Agriculture, 1927)

A survey of extent and cost of weed control and specific weed problems - United States. Agricultural Research Service. (U.S. Dept. of Agriculture, Agricultural Research Service, 1965)

A survey of natural areas in Brunswick County, North Carolina : for The North Carolina Natural Heritage Program, Coastal Natural Area Inventory Project - North Carolina. Coastal Energy Impact Program. (North Carolina Coastal Energy Impact Program, Office of Coastal Management, North Carolina Dept. of Natural Resources and Community Development, 1982)

A survey of natural areas in Tyrrell County, North Carolina : for The North Carolina Natural Heritage Program, Coastal Natural Area Inventory Project - North Carolina. Coastal Energy Impact Program. (North Carolina Coastal Energy Impact Program, Office of Coastal Management, North Carolina Dept. of Natural Resources and Community Development, 1982)

Survey of rare vascular plants in Fidler-Greywillow Wildland Provincial Park - Alberta. Parks; Protected Areas Division. (Alberta Community Development, Parks and Protected Areas, 2005)

Survey of rare vascular plants in La Butte Creek wildland provincial park - Alberta. Parks; Protected Areas Division. (Alberta Community Development, Parks and Protected Areas, 2005)

Survey of the ecologically significant natural areas of the Chesapeake Bay Region - Smithsonian Institution. Center for Natural Areas. (Smithsonian Center for Natural Areas, Ecology Program, Smithsonian Institution, 1973)

Svensk fanerogamflora - Lindman, C. A. M. (Carl Axel Magnus), 1856 -1928 (P.A. Norstedt, 1918)

Sweet's Hortus britannicus, or a catalogue of plants cultivated in the gardens of Great Britain, arranged in natural orders ... - Sweet, Robert, 1783 -1835 (J. Ridgway, 1827)

Sweet's Hortus britannicus, or A catalogue of plants cultivated in the gardens of Great Britain, arranged in natural orders ... - Sweet, Robert, 1783 -1835 (J. Ridgway, 1827)

Sweet's Hortus britannicus : or a catalogue of plants cultivated in the gardens of Great Britain, arranged in natural orders - Sweet, Robert, 1783 -1835 (J. Ridgway, 1826)

Syllabus florae Siculae; seu, Vascularium plantarum Siciliam sponte incolentium enumeratio - Nicotra, Leopoldo, 1846 -1940 (1893)

Sylloge florae congolanae [Phanerogamae] - Durand, Th. (Théophile), 1855 -1912 (Maison A. de Boeck, 1909)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1788)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1889)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1895)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1897)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1925)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1931)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1977)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1978)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1979)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1980)

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, 1991)

Symbolae ad floram Argentinam : Zweite Bearbeitung argentinischer Pflanzen nach den auf Befehl der H. Nacional-Regierung der argentinischen Republik durch die Professoren Lorentz und Hieronymus veranstalteten Sammlungen, sowie den im Museum zu Göttingen aufbewarhten Herbarien anderer Naturforscher, besonders den durch Herrn Schickendantz in der Provinz Catamarca gesammelten Pflanzen - Grisebach, A. (August), 1814 -1879 (Dieterich'sche Verlags-Buchhandlung, 1879)

Symbolae ad floram Brasiliae centralis cognoscendam - Warming, Eugenius, 1841 -1924 (Naturhistoriske Forening i Kjöbenhavn, 1869)

Symbolae Antillanae,seu, Fundamenta florae Indiae Occidentalis - Urban, Ignaz, 1848 -1931 (Fratres Borntraeger ;Paul Klincksieck, 1900)

Symbolae Antillanae,seu, Fundamenta florae Indiae Occidentalis - Urban, Ignaz, 1848 -1931 (Fratres Borntraeger ;Paul Klincksieck, 1901)

Symbolae Antillanae,seu, Fundamenta florae Indiae Occidentalis - Urban, Ignaz, 1848 -1931 (Fratres Borntraeger ;Paul Klincksieck, 1898)

Symbolae Antillanae,seu, Fundamenta florae Indiae Occidentalis - Urban, Ignaz, 1848 -1931 (Fratres Borntraeger ;Paul Klincksieck, 1903)

Symbolae sinicae :botanische Ergebnisse der Expedition der Akademie der Wissenschaften in Wein nach Südwest-China, 1914-1918 - Handel-Mazzetti, Heinrich, Freiherr von, 1882 -1940 (J. Springer, 1936)

Synonymia botanica locupletissima generum, sectionum vel subgenerum ad finem anni 1858 promulgatorum : In forma conspectus systematici totius regni vegetabilis schemati Endlicheriano adaptati - Pfeiffer, Louis (Ludwig Georg Karl), 1805 -1877 (Sumptibus T. Fischer, 1870)

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

Synopsis florae Germanicae et Helveticae : exhibens stirpes phanerogamas rite cognitas, quae in Germania, Helvetia, Borussia et Istria sponte crescunt atque in hominum usum copiosius coluntur : secundum systema Candolleanum digestas, praemissa generum dispositione secundum classes et ordines systematis Linnaeani conscripta - Koch, Wilhelm Daniel Joseph, 1771 -1849 (F. Wilmans, 1837)

Synopsis of the flora of Colorado - Coulter, John Merle, 1851 -1928 (Govt. print. off, 1874)