über den Bau und das Winden der Ranken und Schlingpflanzen - Mohl, Hugo von, 1805 -1872 (Heinrich Laupp, 1827)

Über die Entstehung der Arten im Thier- und Pflanzen-Reich durch natürliche Züchtung, oder, Erhaltung der vervollkommneten Rassen im Kampfe um's Daseyn : nach der dritten Englischen Auflage und mit neueren Zusätzen des Verfassers für diese deutsche Ausgabe - Darwin, Charles, 1809 -1882 (E. Schweizerbart'sche Verlagshandlung, 1863)

Über die palpen der rhopaloceren : ein beitrag zur erkenntnis der verwandtschaftlichen beziehungen unter den tagfaltern - Reuter, Enzio, 1867 -1951 (Druckerei der Finnischen Litteratur Gesellschaft, 1896)

Über Juliania, eine Terebinthaceen-Gattung mit Cupula, und die wahren Stammeltern der Kätzchenblütler. Neue Beiträge zur Stammesgeschichte der Dicotyledonen - Hallier, Hans, 1868 -1932 (Heinrich, 1908)

Ueber den Pollen - Fritzsche, Carl Julius, 1808 -1871 (Kais. Academie der Wissenschaften, 1837)

Uebersicht des Gewaechs-Reichs in seinen natuerlichen Entwickelungsstufen : ein Versuch - Reichenbach, H. G. Ludwig (Heinrich Gottlieb Ludwig), 1793 -1879 (Carl Cnobloch, 1828)

Ulberger's plant and seed annual : garden, farm and flower seeds - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (J. Seulberger, 1893)

Umbelliferae, Aizoaceae, Molluginaceae Passifloraceae - Muséum national d'histoire naturelle (France) (1967)

Uncle Sam says : plant a garden and be a soldier of the soil - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Germain, 1918)

United States Exploring Expedition. During the year 1838, 1839, 1840, 1841, 1842 - United States. Congress. (Printed by C. Sherman, 1863)

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

The Universal herbal; or, Botanical, medical, and agricultural dictionary; containing an account of all the known plants in the world, arranged according to the Linnean system. Specifying the uses to which they are or may be applied, whether as food, as medicine, or in the arts and manufactures, with the best methods of propagation, and the most recent agricultural improvements ... - Green, Thomas. (Caxton Press, 1824)

The universal herbal : or botanical, medical and agricultural dictionary : containing an account of all known plants in the world, arranged according to the Linnean system. Specifying the uses to which they are or may be applied - Green, Thomas. (Printed at the Caxton Press by H. Fisher, 1816)

The universe: or, The infinitely great and the infinitely little - Pouchet, F.-A. (Félix-Archimède), 1800 -1872 (C. Scribner, 1870)

The universe; or, The infinitely great and the infinitely little - Pouchet, F.-A. (Félix-Archimède), 1800 -1872 (Blackie, 1874)

The universe, or, The wonders of creation. The infinitely great and the infinitely little - Pouchet, F.-A. (Félix-Archimède), 1800 -1872 (H. Hallett and company, 1883)

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, 1966)

The University of Texas herbaria : type register - Todzia, Carol A., 1955 - (Plant Resources Center, Dept. of Botany, University of Texas, 1994)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1968)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1972)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1977)

The University of Washington Arboretum bulletin - Arboretum Foundation (Seattle, Wash.) (University of Washington Arboretum Foundation, 1979)

University studies of the University of Nebraska - University of Nebraska (Lincoln campus) (1907)

University studies of the University of Nebraska - University of Nebraska (Lincoln campus) (1914)

A university text-book of botany (Macmillan, 1910)

Unsere Freiland-Nadelhölzer; Anzucht, Pflege und Verwendung aller bekannten in Mitteleuropa im freien Kulturfähigen Nadelhölzer mit Einschluss von Ginkgo und Ephedra - Appel, Otto, 1867 -1952 (Hölder-Pichler-Tempsky, 1923)

Unter den tropen; wanderungen durch Venezuela, am Orinoco, durch Britisch Guyana und am Amazonenstrome in den jahren 1849-1868 - Appun, Carl Ferdinand, 1820 -1872 (1871)

Untersuchungen über die Fauna Peruana - Humboldt, Alexander von, 1769 -1859 (Scheitlin und Zollikofer, 1844)

Untersuchungen über die Bedeutung der Nektarien in den Blumen - Kurr, Johann Gottlob von. (Henneschen Buchhandlung, 1833)

Untersuchungen über die Entstehung der Schlafbewegungen der Blattorgane - Pfeffer, W. (Wilhelm), 1845 -1920 (B. G. Teubner, 1907)

Untersuchungen über die Mimicry auf Grundlage eines natürlichen Systems der Papilioniden - Haase, Erich, 1859 -1894 (T. Fischer, 1892)

Untersuchungen ueber die Lebermoose - Leitgeb, Hubert, 1835 -1888 (O. Deistung, 1879)

Unusual plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hav'alook Gardens, 1956)

Unusual plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hav'alook Gardens, 1957)

Unusual plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hav'alook Gardens, 1958)

Unusual plants - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Hav'alook Gardens, 1954)

Upper Thames and Little Barrier Island (list), [no date] - Cheeseman, T. F. (Thomas Frederick), 1846 -1923 (The author, 1867)

Use of a phenetic analysis of recent hexapod mouthparts for the distribution of hexapod food resource guilds in the fossil record - Labandeira, Conrad Christopher, 1950 - (1990)

Useful wild plants of the United States and Canada - Saunders, Charles Francis, 1859 -1941 (R.M. McBride, 1920)

The uses of plants : a manual of economic botany with special reference to vegetable products introduced during the last fifty years / by G. S. Boulger - Boulger, George Simonds, 1853 -1922 (Roper & Drowley, 1889)

Utafiti : occasional papers of the National Museums of Kenya - National Museums of Kenya (The Museums, 1988)

Växtnomenclatur : Innefattande de i Sverige vilde och odlade växternas släkt-och artnamn samt vanligare botaniska termer, deras betydelse, och betoning jämte förklaring af förkortade autorsnama - Lindgren, Erik, 1828 -1911 (Sigfrid Flodins Förlag, 1903)

Variation in animals and plants - Vernon, Horace Middleton, 1870 - (H. Holt, 1903)

Variation in animals and plants - Vernon, Horace Middleton, 1870 - (H. Holt and company, 1902)

The variation of animals and plants under domestication - Darwin, Charles, 1809 -1882 (J. Murray, 1905)

The variation of animals and plants under domestication - Darwin, Charles, 1809 -1882 (D. Appleton and company, 1883)

The variation of animals and plants under domestication - Darwin, Charles, 1809 -1882 (Appleton, 1897)

The variation of animals and plants under domestication - Darwin, Charles, 1809 -1882 (John Murray, 1868)

The variation of animals and plants under domestication - Darwin, Charles, 1809 -1882 (D. Appleton and company, 1896)

The variation of animals and plants under domestication - Darwin, Charles, 1809 -1882 (D. Appleton and Company, 1894)

The variation of animals and plants under domestication - Darwin, Charles, 1809 -1882 (D. Appleton, 1897)

The variation of animals and plants under domestication - Darwin, Charles, 1809 -1882 (Orange Judd & Co, 1868)

The variation of animals and plants under domestication - Darwin, Charles, 1809 -1882 (J. Murray, 1885)

The variation of animals and plants under domestication - Darwin, Charles, 1809 -1882 (D. Appleton, 1887)

Vascular plants of the Sangamon River basin; annotated checklist and ecological summary - Bell, David T. (University of Illinois at Urbana-Champaign, College of Agriculture, 1974)

Vaughan's 1894 gardening illustrated - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Vaughan's Seed Company, 1894)

Vaughan's 1925 "green list" : wholesale prices for the trade - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Vaughan's Seed Store, 1925)

Vaughan's book for florists - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Vaughan's Seed Store, 1907)

Vaughan's book for florists - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Vaughan's Seed Store, 1918)

Vaughan's book for florists - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Vaughan's Seed Store, 1896)