Studies on the genus agropyron - Robinson, Wilfred, (University of Alberta, 1928)

Studies on the influence of soil composition on the growth and nutrition of certain fungi causing foot- and root-rots of wheat - University of Alberta. Department of Field Crops. (University of Alberta, 1934)

Studies on the life history and habits of the jointworm flies of the genus Harmolita (Isosoma), with recommendations for control - Phillips, W. J. (William Jeter), 1879 - (U.S. Dept. of Agriculture, 1920)

A study in cereal rusts : physiological races - Stakman, E. C. (Elvin Charles), 1885 -1979 (University Farm, 1914)

A study of beaver-waterfowl relations in the mountainous area of Beaverhead County, Montana - Casagranda, Lloyd. (1955)

The study of plant communities : an introduction to plant ecology - Oosting, Henry John, 1903 - (W.H. Freeman, 1948)

The study of plants; an introduction to botany and plant ecology - Woodhead, Thomas William (Clarendon Press, 1915)

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

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

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)

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 plant diseases in the United States in 1918. IV, Diseases of cereal and forage crops - United States. Plant Disease Survey. (Plant Disease Survey, Bureau of Plant Industry, United States Department of Agriculture, 1919)

Summary of re-identifications - December 1959 through June 1960 : Change No. 1 - United States. Agricultural Research Service. New Crops Research Branch, (New Crops Research Branch, 1960)

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)

Summary of re-identifications - July through September 1960 : Change No. 2 - United States. Agricultural Research Service. New Crops Research Branch, (New Crops Research Branch, 1960)

Summary of re-identifications - October through December 1960 : Change No. 3 - United States. Agricultural Research Service. New Crops Research Branch, (New Crops Research Branch, 1960)

A summary of research at the Manitou Experimental Forest in Colorado, 1937-1983 - Gary, Howard L. (1985)

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)

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

Survey and analysis of plant community types of Writing-on-Stone Provincial Park : final report - Alberta. Alberta Sustainable Resource Development. (The Company, 2004)

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)

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

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)

Survival of food crops and livestock in the event of nuclear war Proceedings of a symposium held at Brookhaven National Laboratory, Upton, Long Island, New York, Sept. 15-18, 1970 - Brookhaven National Laboratory. (1971)

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, 1981)

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1989)

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)

Symposium on Mutation and Plant Breeding; [proceedings] (National Academy of Sciences-National Research Council, 1961)

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)

Systematic census of Australian plants, b with chronologic, literary and geographic annotations - Mueller, Ferdinand von, 1825 -1896 (Printed for the Victorian Government by M'Carron, Bird & Co, 1882)

Tabletop gardens : create 40 intimate gardens for the home, no matter what the season - McCreary, Rosemary. (Storey Books, 2002)

A talk on weeds; an address delivered before the county road school, Clinton County, Iowa, 1910, with an appendix describing a few weeds - Pammel, L. H. (Louis Hermann), 1862 -1931 (1910)

A taxonomic assessment and monitoring study of the long-styled thistle (Cirsium longistylum) - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1993)

Taxonomic literature : a selective guide to botanical publications and collections with dates, commentaries and types. Volume IV, P-Sak - Cowan, Richard S., 1921 -1997 (Bohn, Scheltema & Holkema, 1983)

A taxonomic study of the pocket gophers of Alberta - MacDonald, Sandy James. (University of Alta., Dept. of Zoology, 1969)

Taxonomy and ecology of grassland sedges - Marfleet, Frederic C., (University of Alberta, 1950)

Technical report : Illinois natural areas inventory - Illinois. Dept. of Conservation. (Dept. of Landscape Architecture, University of Illinois and Natural Land Institute, 1978)

Telopea: Journal of plant systematics - National Herbarium of New South Wales, (Royal Botanic Garden Sydney, 1977)

Telopea: Journal of plant systematics - National Herbarium of New South Wales, (Royal Botanic Garden Sydney, 1981)

Telopea: Journal of plant systematics - National Herbarium of New South Wales, (Royal Botanic Garden Sydney, 1990)

Telopea: Journal of plant systematics - National Herbarium of New South Wales, (Royal Botanic Garden Sydney, 1986)

Telopea: Journal of plant systematics - National Herbarium of New South Wales, (Royal Botanic Garden Sydney, 1999)

Telopea: Journal of plant systematics - National Herbarium of New South Wales, (Royal Botanic Garden Sydney, 2011)

Természetrajzi Füzetek kiadja a Magyar nemzeti Muzeum - Magyar Nemzeti Múzeum. (Franklin-társulat nyomdája [etc.], 1895)

Terrestrial cryptogams of pinyon-juniper woodlands in the Southwestern United States : a review - Rocky Mountain Forest; Range Experiment Station (Fort Collins, Colo.) (U.S. Dept. of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station, 1996)

Terry Badlands nongame survey and inventory : final report (May 1979-July 1980) - United States. Bureau of Land Management. (Wildlife Division], 1980)

Test of RPA production coefficients and local assumptions for the pinyon-juniper ecosystem in central Utah - Intermountain Research Station (Ogden, Utah) (U.S. Dept. of Agriculture, Forest Service, Intermountain Research Station, 1989)

The Texas journal of science - Texas Academy of Science. (Texas Academy of Science, 1988)

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

A text-book of botany and pharmacognosy : intended for the use of students of pharmacy, as a reference book for pharmacists, and a handbook for food and drug analysts - Kraemer, Henry, 1868 -1924 (J. B. Lippincott company, 1910)

A text-book of grasses : with especial reference to the economic species of the United States - Hitchcock, A. S. (Albert Spear), 1865 -1935 (Macmillan, 1914)

A text-book of grasses with especial reference to the economic species of the United States - Hitchcock, A. S. (Albert Spear), 1865 -1935 (Macmillan Co, 1914)

A text-book of mycology and plant pathology - Harshberger, John W. (John William), 1869 -1929 (P. Blakiston's Son & Co, 1917)