The spruce and balsam fir trees of the Rocky Mountain region - Sudworth, George B. (George Bishop), 1864 -1927 (U.S. Dept. of Agriculture, 1916)

Spruce-fir forests of the highlands of northern Alberta - Achuff, P. L. (University of Alberta, Dept. of Botany, 1974)

Stahl's grosses illustriertes Kräuterbuch; ausführliche Beschreibung aller auf den Bergen und in den Thälern, auf den Wiesen und in den Wäldern wild wachsenden Pflanzen und Kräuter ... (Stahl, 1900)

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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)

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)

Standardized plant names; a catalogue of approved scientific and common names of plants in American commerce - Olmsted, Frederick Law, 1870 -1957 (1923)

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Statement of work done by the Pennsylvania Department of Forestry, during - Pennsylvania. Department of Forestry. (Wm. Stanley Ray, state printer of Pennsylvania, 1902)

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Status of the Barred Owl (Strix varia) in Alberta - Alberta. Fish; Wildlife Division. (Alberta Sustainable Resource Development, 2005)

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The Stephen Hoyt's Sons Co., Inc. [catalog] - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Stephen Hoyt's Sons Co., Inc, 1923)

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The steward : newsletter of Alberta's natural and protected areas and the people who care for them - Alberta. Natural; Protected Areas Section. (Natural and Protected Areas Section of Alberta Forestry, Lands and Wildlife, 1994)

The stipitate hydnums of Nova Scotia - Harrison, Kenneth A. (Research Branch, Canada Dept. of Agriculture, 1961)

Stout manual training school; a handbook for planning and planting small home grounds ... with a list of native and commonly cultivated plants that are represented in the collection upon the Stout manual training school grounds - Manning, Warren H. (Warren Henry), 1860 -1938 (Stout manual training school, 1899)

Strasburger's Text-book of botany - Strasburger, Eduard, 1844 -1912 (Macmillan, 1921)

Street and shade trees. Practical essays on the subject of trees of street and lawn planting, with directions for transplanting, and a list of desirable trees - Powell, E. C. (Edwin C.) (Rural Pub. Co, 1893)

Structural and systematic botany: being an arrangement of plants, forming a basis for the study of botany, either on the Linnaean or natural systems - Smith, Edward, 1818? -1874 (C. Griffin, 1855)

A student's text-book of botany - Vines, Sydney Howard, 1849 -1934 (S. Sonnenschein & co, 1896)

Studies in forest pathology : II. the biology of Fomes Pinicola (SW.) Cooke - Canada. Department of Agriculture. (: Department of Agriculture, 1929)

Studies of plant life in Canada; or, Gleanings from forest, lake and plain - Traill, Catherine Parr Strickland, 1802 -1899 (A.S. Woodburn, 1885)

Studies on the plant cell. pt.1-8 - Davis, Bradley M. (Bradley Moore), 1871 -1957 (Ginn and Co, 1904)

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

The study of the evergreens in the public schools - Weed, Clarence Moores, 1864 -1947 (Wright & Potter Printing Co., State Printers, 1908)

A study of the physiographic ecology of Mount Ktaadn, Maine - Harvey, Le Roy Harris. (1903)

Subfossil bryophytes in eastern Beringia : their paleoenvironmental and phytogeographical significance - Janssens, Jan A. P. (University of Alberta, Dept. of Botany, 1981)

The suitability of American woods for paper pulp - Rue, John Davidson, 1882 - (U.S. Dept. of Agriculture, 1927)

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 birds of Prince Edward Island - Dwight, Jonathan, Jr., 1858 -1929 (s.n, 1893)

Summer price list of evergreen trees, shrubs and vines and of pot-grown ground covers : August 1922 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Eastern Nurseries, 1922)

Sunnyfield Nursery Co. : [catalog] - Sunnyfield Nursery Co. (Sunnyfield Nursery Co, 1912)

Supplementary catalog of ornamental nursery stock : hardy trees, shrubs and flowering plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Jewell Nursery Co, 1905)

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

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)

Swan River Nursery - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Swan River Nursery, 1927)

Syllabus der Vorlesungen über specielle und medicinisch-pharmaceutische Botanik. Eine Uebersicht über das gesammte Pflanzensystem mit Berücksichtigung der Medicinal- und Nutzpflanzen - Engler, Adolf, 1844 -1930 (Gebrüder Borntraeger, 1892)

Sylloge fungorum omnium hucusque cognitorum - Saccardo, P. A. (Pier Andrea), 1845 -1920 (sumptibus auctoris, 1887)

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)

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, 1979)

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, 1984)

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, 1989)

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

Syllogeus - National Museum of Natural Sciences (Canada) (National Museum of Natural Sciences, 1992)

Sylvan Ontario : a guide to our native trees and shrubs - Muldrew, W. H. (William Hawthorne), 1867 -1904 (W. Briggs, 1901)

Synopsis coniferarum - Endlicher, Stephan, 1804 -1849 (Apud Scheitlin & Zollikofer, 1847)

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

Synopsis der nadelhölzer, deren charakteristischen merkmale nebst andeutungen über ihre cultur und ausdauer in Deutschlands klima - Henkel, Johann Baptist, 1815 -1871 (Verlag der J. G. Cottaschen Buchhandlung, 1865)

A synopsis; or, systematic catalogue of the medicinal plants of the United States - Clapp, A. (Asahel) (T.K. and P.G. Collins, printers, 1852)

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

Tables of whole-tree weight for selected U.S. tree species - United States. Forest Service. (U.S. Dept. of Agriculture, Forest Service, 1984)

Tagebuch meiner Reise um die Erde : 1892-1893 - Franz Ferdinand, aartshertog van Oostenrijk, 1863 -1914 (Hölder, 1895)

Tamarack - Betts, Harold S. (Forest Service, U.S. Dept. of Agriculture, 1985)

Target Seedling Symposium : proceedings, combined meeting of the Western forest nursery associations, August 13-17, 1990, Roseburg, Oregon - Campbell, Sally J. (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1990)

Taxonomy and geographical distribution of the genus Milesia - Faull, J. H. (Joseph Horace), 1870 -1961 (The Arnold Arboretum of Harvard University, 1932)

Taxonomy and geographical distribution of the genus Uredinopsis - Faull, J. H. (Joseph Horace), 1870 -1961 (The Arnold Arboretum of Harvard University, 1938)