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Status report on sensitive lady's slipper orchids (Cypripedium calceolus var. parviflorum and Cypripedium passerinum) on the Kootenai National Forest - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1996)

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Status review of Orchis rotundifolia, U.S. Forest Service, Region 1, Flathead and Lewis & Clark National Forests, Montana - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1988)

Status review update of Goodyera repens, Lewis and Clark National Forest, Montana - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1992)

Stereum and allied genera of fungi in the Upper Mississippi Valley - Lentz, Paul L. (Paul Lewis), 1918 - (U.S. Dept. of Agriculture, 1956)

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)

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)

Strip sampling with airborne video for assessment of blowdown caused by straight line winds - Ciesla, William M. (USDA Forest Service, State and Private Forestry, Northeastern Area, 2000)

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Studies in French forestry, with two chapters by William B. Greeley - Woolsey, Theodore S. (Theodore Salisbury), 1879 -1933 (Wiley, 1920)

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

Studies of the Essex flora: an enumeration of all plants found growing naturally within the limits of Lynn, Mass - Tracy, Cyrus M. (Cyrus Mason), 1824 -1891 (The Nichols press, 1892)

Studies of trees - Levison, Jacob Joshua, 1881 - (J. Wiley & sons, 1914)

Studies of trees - Levison, Jacob Joshua, 1881 - (J. Wiley, 1914)

Studies of trees in winter; a description of the deciduous trees of northeastern America - Huntington, Annie Oakes, 1875 -1940 (D. Estes and Company, 1910)

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

A study of the apparent unequal sex ratio of wapiti - Flook, Donald R. (1967)

A study of the sharp-tailed grouse - Snyder, L. L. (Lester Lynne), 1894 - (1935)

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

A study of two species of gulls, Larus Californicus and L. Delawarensis, breeding in an inland habitat - Vermeer, Kees (1967)

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A supplement to the pharmacopoeia being a treatise on pharmacology in general; including not only the drugs and compounds which are used by practitioners of medicine, but also those which are sold by chemists, druggists, and herbalists, for other purposes; together with a collection of the most useful medical formulæ ; an explanation of the contractions used by physicians and druggists; the medical arrangement of the articles of the London pharmacopeia, with their doses, at one view; a similar list of the indigenous plants of the British islands, which are capable of being used in medicine, &c. ; and also a very copious index, English and Latin, of the various names by which the articles have been known at different periods - Gray, Samuel Frederick, 1766 -1828 (printed for Thomas and George Underwood, 1821)

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

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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, 1983)

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, 1992)

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The sylva americana; or, A description of the forest trees indigenous to the United States, practically and botanically considered - Browne, D. J. (Daniel Jay), 1804 -1867 (W. Hyde & co, 1832)

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Systematic catalogue of plants of Wisconsin and Minnesota - Owen, David Dale, 1807 -1860 (Lippincott, Grambo, 1852)

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A taxonomic classification system for Montana riparian vegetation types : an interagency approach to classifying Montana's riparian ecosystems - Batchelor, Ronald F. (Montana Rural Area Development Committee, Wildlife Subcommittee, Riparian Program Team, 1982)

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Taxonomic report of the International Lepidoptera Survey - Gatrelle, Ronald R. (International Lepidoptera Survey, 2010)

Taxonomic report of the International Lepidoptera Survey - Gatrelle, Ronald R. (International Lepidoptera Survey, 2020)

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

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