The spring grain-aphis or "green bug." - Webster, F. M. (Francis Marion), 1849 -1916 (Govt. print. off, 1912)

Spring planting : 1929 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (1929)

Spring planting for 1930 [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (William J. Rice, 1930)

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

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

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

Studien über die natürlichen Humusformen und deren Einwirkung auf Vegetation und Boden. Mit analytischen Belegen von C.F.A. Tuxen - Müller, P. E (J. Springer, 1887)

Studier i den Linnéanska nomenclaturen och synonymiken - Ährling, Ewald, 1837 -1888 (Abr. Bohlins Boktryckeri, 1872)

Studies on Rocky Mountain flora - Rydberg, Per Axel, 1860 -1931 (New York Botanical Garden, 1905)

Stumpp & Walter Co.'s seed annual : 1928 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1928)

Stumpp & Walter Co.'s seed annual, 1929 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stumpp & Walter Co, 1929)

Stuttgarter Beiträge zur Naturkunde. Serie A, Biologie - Staatliches Museum für Naturkunde in Stuttgart. (Staatliches Museum für Naturkunde, 1975)

su lian de cao dian zhi bei 苏联的草甸植被 - Shennikov, A. P. (Aleksandr Petrovich) 1888 -1962 (ke xue chu ban she she 科学出版社, 1959)

su lian de cao yuan 苏联的草原 - Lavrenko, E. M. (Evgeniĭ Mikhaĭlovich) 1900 -1987 (ke xue chu ban she she 科学出版社, 1959)

The subantarctic islands of New Zealand. Reports on the geo-physics, geology, zoology, and botany of the islands lying to the south of New Zealand, based mainly on observatiohs and collections made during an expedition in the government steamer "Hinemoa" (Captain J. Bollons) in November, 1907 - Chilton, Chas (Charles) 1860 - (Printed by J. Mackay, govt. printer, 1909)

Summa plantarum : quae hactenus innotuerunt methodo Linnaeana per genera et species digesta illustrata descripta - Vitman, Fulgenzio Antonio Maria, ‏ 1728 -1806 (Typis Imper. Monast. s. Ambrosii majoris, 1789)

Summaries of current reclamation studies by the Alberta Forest Service : (updated 1984) - Alberta. Alberta Energy; Natural Resources. (Alberta Energy & Natural Resources, Forest Service, 1984)

Summary of re-identifications - January through April 1961 : Change No. 4 - United States. Bureau of Plant Industry, (New Crops Research Branch, Plant Industry Station, 1960)

Summer and autumn 1919 : bulbs, seeds for summer and autumn sowing - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Arthur T. Boddington Co. Incorporated, 1919)

Summer and autumn food habits of island and mainland populations of polar bears - a comparative study - Russell, Richard H (University of Alberta, Dept. of Zoology, 1971)

Supplement zur Flora von Wu¨rttemberg - Lechler, Willibald, 1814 -1856 (E. Schweizerbart'sche Verlagsbuchh, 1844)

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

Supplementum Prodromi florae Hispanicae sive, Enumeratio et descriptio omnium plantarum inde ab anno 1862 usque ad annum 1893 in Hispania detectarum quae innotuerunt auctori, adjectis locisnovis specierum jam notarum - Willkomm, Moritz, 1821 -1895 (E. Schweizerbart, 1893)

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 Botrychium paradoxum in the vicinity of Storm Lake, Deerlodge National Forest - U.S. Fish; Wildlife Service (Montana Natural Heritage Program, 1993)

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

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1907)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1908)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1909)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1910)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1911)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1912)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1914)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1915)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1916)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1917)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1918)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1920)

Svensk botanisk tidskrift - Svenska botaniska föreningen. (Svenska botaniska föreningen [etc.], 1921)

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

Svensk flora. Beskrifning öfver Sveriges fanerogamer och ormbunkar - Kindberg, N. C. (Nils Conrad), 1832 -1910 (P.M. Sahlströms bokhandel (H.W. Tullberg), 1877)

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, 1898)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1902)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1905)

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, 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, 1989)

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

Synopsis der deutschen und schweizer Flora - Koch, Wilhelm Daniel Joseph, 1771 -1849 (O. R. Reisland, 1892)

Synopsis der deutschen und schweizer Flora, enthaltend die genauer bekannten phanerogamischen Gewächse, so wie die cryptogamischen Gefäss-Pflanzen, welche in Deutschland, der Schweiz, in Preussen und Istrien wild wachsen und derjenigen ... nach dem DeCandollischen System geordnet, mit einer vorangehenden Uebersicht der Gattungen nach den Classen und Ordnungen des Linneischen Systemes - Koch, Wilhelm Daniel Joseph, 1771 -1849 (Gebhardt & Reisland, 1846)

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 plantarum glumacearum - Steudel, Ernst Gottlieb, 1783 -1856 (J. B. Metzler, 1855)

Synopsis plantarum glumacearum - Steudel, Ernst Gottlieb, 1783 -1856 (J.B. Metzler, 1855)

Synopsis plantarum; seu, Enumeratio systematica plantarum plerumque adhuc cognitarum cum differentiis specificis et synonymis selectis ad modum Persoonii elaborata - Dietrich, David Nathanael Friedrich, 1800 -1888 (B. F. Voigtii, 1839)

Synopsis plantarum vascularium Montis Pollini - Terracciano, Nicola. (Tipografia della R. Accademia dei Lincei, 1890)

A system of physiological botany - Keith, Patrick, 1769 -1840 (Printed for Baldwin, Cradock, and Joy, 1816)

Systema characterum plantarum; seu, Dictionarium rerum botanicum, filio conscriptum, et ab ipso figuris illustratum - Pereboom, Cornelius. (1788)

Systema plantarum Europae, exhibens characteres naturales generum, characteres essentiales generum & specierum, synonima antiquorum, phrases specificas recentiorum Halleri, Scopoli, &c. Descriptiones rariorum, nec-non floras tres novas, Lugdunaeam, Delphinalem, Lithuanicam, non omissis plantis exoticis in hortis Europae vulgo obviis - Linné, Carl von, 1707 -1778 (Sumptibus Piestre & Delamolliere, 1785)

A systematic arrangement of British plants - Withering, William, 1741 -1799 (Printed for Adam Scott, 1845)

A systematic arrangement of British plants - Withering, William, 1741 -1799 (Printed for Adam Scott, 1848)

A systematic arrangement of British plants :with an easy introduction to the study of botany - Withering, William, 1741 -1799 (Printed for T. Cadell, jun [etc.], 1801)

Szczecińskie Roczniki Naukowe. Nauki Przyrodnicze i Rolnicze - Szczecińskie Towarzystwo Naukowe. (Zakł. Nar. im. Ossolińskich, 1990)

Szczecińskie Roczniki Naukowe. Nauki Przyrodnicze i Rolnicze - Szczecińskie Towarzystwo Naukowe. (Zakł. Nar. im. Ossolińskich, 1993)

Tableau encyclopédique et méthodique des trois règnes de la nature. Botanique - Poiret, Jean-Louis-Marie, 1755 -1834 (Panckoucke, 1791)

Tableaux analytiques de la flore d'Angers. Première partie, Phanérogames - Hy, F. (Félix), 1853 -1918 (Lachèse et Dolbeau, 1884)

Tait's thorobred seeds : our 86th annual catalog, 1955 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. Tait & Sons, 1955)

Tait's thorobred seeds : our 87th annual catalog, 1956 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. Tait & Sons, 1956)

Tait's thorobred seeds : our 88th annual catalog, 1957 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Geo. Tait & Sons, 1957)