Trees of Ohio and surrounding territory, including the area westward to the limits of the prairie and south to the thirty seventh parallel - Schaffner, John H. (John Henry), 1866 -1939 (1909)

Trees of Ohio : identified by their leaves - Madison, Harold Lester, 1878 -1950 (Cleveland Museum of Natural History, 1922)

Trees of the northern United States: their study, description and determination, for the use of schools and private students - Apgar, A. C. (Austin Craig), 1838 -1908 (American Book Co, 1892)

Trees of the northern United States: their study, description and determination, for the use of schools and private students - Apgar, A. C. (Austin Craig), 1838 -1908 (American book company, 1892)

The trees of Vermont - Otis, Charles Herbert, 1886 - (Free press printing co, 1916)

Trees, plants, planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Breck-Robinson Nursery Co, 1917)

Trees, plants, planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Breck-Robinson Nursery Co, 1913)

Trees, plants, planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Breck-Robinson Nursery Co, 1915)

Trees, plants, planting - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Breck-Robinson Nursery Co, 1914)

Trees, shrubs and vines of the northeastern United States; their characteristic landscape features fully described for identification by the non-botanical reader; together with an account of the principal foreign hardy trees, shrubs and vines cultivated in our country, and found in Central park, New York city - Parkhurst, H. E. (Howard Elmore), 1848 -1916 (C. Scribner's sons, 1903)

Trees : the yearbook of agriculture 1949 - United States. Department of Agriculture. (U.S. Dept. of Agriculture, 1949)

Trees : the yearbook of agriculture, 1949 - United States. Department of Agriculture. (United States Government Printing Office, 1949)

Trees worth knowing - Rogers, Julia Ellen, 1866 -1958 (Doubleday, Page & company, 1917)

Trends and silvicultural significance of upland forest successions in southern New England - Lutz, H. J. (Harold John), 1900 - (Yale University, 1928)

A trip to Nepigon some notes upon collecting and breeding butterflies from the egg - Fletcher, James 1852 -1908 (Warwick?, 1889)

Tropische und nordamerikanische Waldwirtschaft und Holzkunde; Handbuch für Forstleute, Holz-Techniker und Händler in Deutschland und im Ausland - Semler, Heinrich, 1841 -1888 (P. Parey, 1888)

Trudy Imperatorskago S.-Peterburgskago botanicheskago sada.Acta Horti Petropolitani - Imperatorskii Sankt-Peterburgskii botanicheskii sad. (Imperatorskiǐ S.-Peterburgskiǐ botanicheskiǐ sad, 1884)

Trudy Imperatorskago S.-Peterburgskago botanicheskago sada.Acta Horti Petropolitani - Imperatorskii Sankt-Peterburgskii botanicheskii sad. (Imperatorskiǐ S.-Peterburgskiǐ botanicheskiǐ sad, 1903)

The trumpeter swan : its history, habits and population in the United States - Banko, Winston E. (U.S. Fish and Wildlife Service, 1960)

Tulane studies in zoology - Tulane University. (Tulane University, 1965)

Understory-overstory vegetation relationships : an annotated bibliography - Clary, Warren P. (U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1982)

United States National Arboretum contribution - National Arboretum (U.S.) (The Service, 1994)

University of California publications in botany - University of California, Berkeley. (University of California Press, 1921)

University of California publications in zoology - University of California, Berkeley. (University Press, 1908)

University of California publications in zoology - University of California, Berkeley. (University Press, 1910)

University of California publications in zoology - University of California, Berkeley. (University Press, 1915)

The University of Colorado studies. General series A - University of Colorado, Boulder. (University of Colorado, 1905)

The University of Colorado studies. General series A - University of Colorado, Boulder. (University of Colorado, 1906)

The University of Colorado studies. General series A - University of Colorado, Boulder. (University of Colorado, 1907)

The University of Colorado studies. General series A - University of Colorado, Boulder. (University of Colorado, 1908)

The University of Colorado studies. General series A - University of Colorado, Boulder. (University of Colorado, 1909)

The University of Colorado studies. General series A - University of Colorado, Boulder. (University of Colorado, 1902)

The University of Colorado studies. General series A - University of Colorado, Boulder. (University of Colorado, 1912)

The University of Colorado studies. General series A - University of Colorado, Boulder. (University of Colorado, 1914)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1948)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1956)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1955)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1958)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1963)

University of Kansas publications, Museum of Natural History - University of Kansas. Museum of Natural History. (University of Kansas, 1964)

The University of Kansas science bulletin - University of Kansas. Museum of Natural History. (University of Kansas, 1936)

The University of Kansas science bulletin - University of Kansas. Museum of Natural History. (University of Kansas, 1949)

The University of Kansas science bulletin - University of Kansas. Museum of Natural History. (University of Kansas, 1954)

The University of Kansas science bulletin - University of Kansas. Museum of Natural History. (University of Kansas, 1956)

The University of Kansas science bulletin - University of Kansas. Museum of Natural History. (University of Kansas, 1968)

The University of Missouri studies. Science series - University of Missouri. (The University, 1905)

The University of Missouri studies. Science series - University of Missouri. (The University, 1907)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1962)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1969)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1980)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1983)

University studies of the University of Nebraska - University of Nebraska (Lincoln campus) (1904)

University studies of the University of Nebraska - University of Nebraska (Lincoln campus) (1888)

University studies of the University of Nebraska - University of Nebraska (Lincoln campus) (1911)

University studies of the University of Nebraska - University of Nebraska (Lincoln campus) (1917)

Unsere Freiland-Laubgehölze, Anzucht, Pflege und Verwendung aller bekannten in Mitteleuropa im freien kulturfähigen Laubgehölze, unter Mitwirkung von István Graf Ambrózy-Migazzi, Georg Arends, C. Heicke, Herm. A. Hesse, P. Kache, Wilhelm Kesselring, A. Purpus, Alfred, Rehder, Prof. Schwappach, Fritz Graf Schwerin, Hellmut Spaeth, Egbert Wolf und Franz Zeman. Hrsg. von Ernst Graf Silva Tarouca und Camillo Schneider - Schneider, Camillo, 1876 -1951 (Hölder-Pichler-Tempsky A.G.; [etc.], 1922)

Untersuchungen uber den Lichtgenuss der Pflanzen im Yellowstonegebiete und in anderen Gegenden Nordamerikas ... - Wiesner, Julius, 1838 -1916 (1905)

Update to the report on the conservation status of Grindelia howellii, a candidated threatened species - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1991)

Update to the status review of Howellia aquatilis : field surveys, monitoring studies, and transplant experiments, 1992 - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1992)

Update to the status review of Howellia aquatilis : field surveys, monitoring studies, and transplant experiments, 1989 - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1990)

Update to the status review of Howellia aquatilis : field surveys, monitoring studies, and transplant experiments, 1990 - Montana Natural Heritage Program. (Montana Natural Heritage Program, 1991)

Upper Bob Creek Ecological Reserve management plan - Alberta Land; Forest Services. (Alberta Environmental Protection, Land and Forest Service, 1997)

Upper Columbia River Basin : draft environmental impact statement - United States. Bureau of Land Management. ([U.S. Department of Agriculture, Forest Service, Intermountain Region], 1997)

Urban natural areas : ecology and preservation - Cranmer-Byng, Jack, 1919 - (Institute for Environmental Studies, University of Toronto, 1981)

USDA plant hardiness zone map - United States. Agricultural Research Service. (The Service?], 1990)

The use of multivariate statistics in studies of wildlife habitat - U.S. Fish; Wildlife Service (Rocky Mountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1981)

Uses of plants by the Chippewa Indians - Densmore, Frances, 1867 -1957 (U.S. G.P.O, 1928)

Utah insects - Stains, G S (Utah Agricultural Experiment Station, 1939)

Utah's forest products industry : a descriptive analysis, 1992 - Van Hooser, Dwane D. (Intermountain Research Station, 1995)

Ute ladies tresses (Spiranthes diluvialis) in Idaho : 1997 and 1998 status reports - Moseley, Robert K. (Bureau of Land Management, Idaho State Office, 1998)

Utilization of hardwoods growing on southern pine sites - Koch, Peter, 1920 -1998 (U.S. Dept. of Agriculture, Forest Service, 1985)

Variation in phenology and monoterpene patterns of defoliated and nondefoliated Douglas-fir (Pseudotsuga menziesii var. glauca) - Wickman, Boyd E. (1993)

Variation in suckering capacity among and within lateral roots of an aspen clone - Intermountain Forest; Range Experiment Station (Ogden, Utah) (Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1978)