- University of London. Eugenics Record Office.
- University of London. Imperial Studies Committee.
- University of London. Institute of Historical Research.
- University Of London. South-eastern Agricultural College, Wye (England)
- University of Maine Forestry Department.
- University of Maine. Forestry Dept.
- University of Manchester.
- University of Maryland, College Park.
- University Of Maryland. National Resources Institute.
- University of Massachusetts (Amherst campus). Cooperative Extension Service. Communications Center.
- University of Massachusetts (Amherst Campus). Dept. of Geology and Mineralogy.
- University of Massachusetts (System). Center for Marine Science and Technology.
- University of Massachusetts at Amherst. Cooperative Extension Service
- University of Massachusetts at Amherst. Cooperative Extension Service.
- University of Massachusetts at Amherst. Dept. of Plant and Soil Sciences.
- University of Melbourne.
- University of Miami.
- University of Miami. Institute of Marine Science.
- University of Miami. Marine Laboratory.
- University of Michigan.
- University of Michigan. Biological Station.
- University of Michigan. Botanical Gardens Association.
- University of Michigan. Great Lakes and Marine Waters Center.
- University of Michigan. Great Lakes Research Division.
- University of Michigan. Museum of Zoology.
- University of Michigan. Museum of Zoology. Mollusk Division.
- University of Michigan. University Herbarium.
- University of Michigan. University Museum.
- University of Minnesota.
- University of Minnesota. Agricultural Experiment Station.
- University of Minnesota. School of Agriculture.
- University of Minnesota. State Experiment Station.
- University of Missouri.
- University of Montana (Missoula)
- University of Montana (Missoula, Mont. : 1965-1994). Department of Zoology.
- University of Montana (Missoula, Mont. : 1965-1994). School of Forestry.
- University of Montana (Missoula, Mont.). Division of Biological Sciences.
- University of Montana.
- University of Montana--Missoula.
- University of Montana--Missoula. College of Forestry and Conservation,
- University of Montana--Missoula. Division of Biological Sciences.
- University of Montana--Missoula. Riparian and Wetland Research Program.
- University of Montana--Missoula. School of Forestry.
- University of Montana--Missoula. Wilderness Institute.
- University of Montana--Missoula. Wildlife Biology Program.
- University of Nebraska (Lincoln campus)
- University of Nebraska (Lincoln campus). Agricultural Experiment Station.
- University of Nebraska (Lincoln campus). Botanical Seminar.
- University of Nebraska (Lincoln campus). Dept. of Zoology.
- University of Nebraska (Lincoln campus). Forest Club
- University of Nebraska State Museum.
- University of Nebraska. Botanical Seminar.
- University of Nebraska--Lincoln. School of Natural Resource Sciences.
- University of Nevada, Reno.
- University of Nevada.
- University of Nevada. Desert Research Institute.
- University of New Hampshire. Cooperative Extension.
- University of New Mexico.
- University of Newcastle upon Tyne.
- University of North Carolina (1793-1962)
- University Of North Carolina (1793-1962). University Extension Division.
- University of North Carolina at Chapel Hill. Institute of Government.
- University of North Dakota. Museum.
- University of Notre Dame
- University of Oklahoma
- University of Oregon. Department of Commercial and Industrial Service.
- University of Oregon. Herbarium.
- University of Oxford.
- University of Oxford. Institute for Research in Agricultural Economics.
- University of Oxford. Institute of Agricultural Economics
- University of Oxford. Institute of Historical Research.
- University of Oxford. University Museum.
- University of Oxford. University Museum. Hope Department of Zoology.
- University of Pennsylvania.
- University of Pennsylvania. Botanical Laboratory.
- University of Pennsylvania. Morris Arboretum.
- University of Pennsylvania. Physiological Laboratory.
- University Of Pennsylvania. School of Veterinary Medicine.
- University of Puerto Rico (System). Programa Sea Grant.
- University of Rhode Island. Narraganset Marine Laboratory.
- University of Rochester.
- University of Rochester. Department of Geology.
- University of Saskatchewan. College of Agriculture.
- University of Southern California.
- University of Southern California. Department of Geology.
- University Of Southwestern Louisiana.
- University of St. Andrews.
- University of Tennessee (System)
- University of Texas at Austin.
- University of Texas at Austin. Plant Resources Center.
- University of Texas at Dallas.
- University of Texas Marine Science Institute.
- University of Texas. Department of Extension.
- University of Texas. Division of Economic Geology.
- University of Texas. Institute of Marine Science.
- University of the State of New York.
- University of the State of New York. Board of Regents.
- University of the State of New York. Division of Visual Instruction.
- University of the State of New York. Visual Instruction Division.
- University of Toronto.
- University of Toronto. Department of Biology.
- University of Toronto. Dept. of Anatomy.
- University of Toronto. Faculty of Forestry
- University of Toronto. Faculty of Forestry.
- University Of Toronto. Faculty of Law,
- University of Toronto. Faculty of Law.
- University of Toronto. Library.
- University of Toronto. Natural Science Association.
- University of Toronto. Ontario Fisheries Research Laboratory.
- University Of Toronto. |b Faculty Of Law,
- University of Vermont. Botany Dept.
- University of Vermont. School of Natural Resources.
- University of Virginia
- University of Washington.
- University of Washington. College of Forest Resources.
- University of Washington. Quaternary Research Center.
- University of Washington. Botanic Gardens.
- University of Washington. Center for Urban Horticulture.
- University of Washington. Center for Urban Horticulture.
- University of Washington. Department of Atmospheric Sciences.
- University of Wisconsin.
- University of Wisconsin. Agricultural Experiment Station.
- University of Wisconsin. College of Agriculture,
- University of Wisconsin--Madison. Agricultural Experiment Station.
- University Of Wisconsin--Madison. Department of Wildlife Ecology.
- University of Wyoming. Department of Geology.
- University of Wyoming. Department of Zoology and Physiology.
- University Press (Cambridge, Mass.)
- Univerzita Karlova. Botanická Zahrada.
- Univerzita Palackého v Olomouci. Botanická zahrada.
- Uniwersytet Jagielloński. Ogród Botaniczny.
- Uniwersytet Lwowski. Ogród botaniczny.
- Uniwersytet Stefana Batorego. Zakład Farmakognozji i Hodowli Roślin Lekarskich.
- Uniwersytet Wrocławski. Muzeum Zoologiczne.
- Uniyal, B. P.
- Uniyal, Prem
- Uniyal, Prem Lal
- Uniyal, Shiv Prasad
- Uniyal, V. P.
- Uniyāla, Māyārāma, 1940-
- Unkelbach, G.
- Unklesbay, A. G. 1914-
- Unknown
- Unlu, Isik
- Unmack, Peter J.
- Unnahachote, Thornthan
- Unnikrishnan, N.
- Unnithan, G. V. K.
- Unnithan, R. Viswanathan
- Unnithan, Saraswathy
- Unno, Joyleen
- Unny, K L
- Unrein, Fernando
- Unrug, Kot F.
- Unruh, Corinne M.
- Unruh, Thomas R.
- Unsöld, Markus
- Unsworth, James W.
- Untawale, Arvind G.
- Untereiner, Wendy A.
- Untermann, Ernest.
- Unterseher, Martin
- Unterweger, Philipp Andreas
- Unuma, Tatsuya
- Unverricht And Scott (Firm),
- Unwin Brothers (Firm)
- Unwin, Arthur Harold, 1878-
- Unwin, David M.
- Unwin, R.
- Unwin, W. H.
- Unwin, William Charles, 1811-1887
- Unzer, Johann August, 1727-1799
- Unzicker, Christian
- Unzicker, John D.
- Unzueta, Luis
- Uong, Sing Po
- Upadhaya, Krishna
- Upadhyaya, Y. M.
- Upadhye, Anuradha S
- Upatham, E. Suchart
- Upatham, Suchart
- Upchurch, Bruce L.
- Upchurch, Garland R
- Upchurch, M. Lee
- Upchurch, Paul,
- Upegui-Vélez, Carmen
- Upham, Alan W
- Upham, Arthur Aquila, 1853-
- Upham, Sidney H.
- Upham, Warren, 1850-1934
- Upham, William Kennedy.
- Uphof, Johannes Cornelius Theodorus 1886-1969
- Upholt, William M. (William Martin), 1914-
- Upjohn, D. H.
- Upland Nurseries.
- Upmarck, Johan, 1664-1743
- Upper Bank Nurseries.
- Upper Mill Gardens.
- Uppsala 1719.
- Uppsala universitet
- Uppsala universitet. Herbarium
- Uppsala universitet. Naturaliekabinett.
- Uppsala universitetsbibliotek
- Uppsala, Sweden. Universitet. Bibliotek
- Upreti, D. K.
- Upson, Walter L
- Uptack Hill Greenhouse.
- Upton Gardens.
- Upton Nursery Company.
- Upton, Harry Endicott, 1890-
- Upton, Javier Lopez
- Upton, M. S. (Murray S.)
- Upton, Rebecca A.
- Upton, Roger D.
- Upton, Steve J
- Upton, Walter T
- Uptown Seed Store.
- Ural'skoe obshchestvo liubitelei estestvoznaniia. Muze
- Uramoto, Keiko
- Urano, Akihisa
- Urbaczek, Ana Carolina
- Urbahn, Ernst
- Urbahns, T. D. (Theodore Dietrich), 1880-
- Urbain, A
- Urbain, Achille 1884-1957
- Urban & Community Forestry Program (Mont.)
- Urban, Abram Linwood.
- Urban, Bernhard
- Urban, C.
- Urban, Danuncia, 1933-
- Urban, Dean
- Urban, Emil K.
- Urban, Ferdinand, 1879-1951
- Urban, Harry D.
- Urban, Ignaz, 1848-1931
- Urban, John, 1909-
- Urbán, Jorge
- Urban, Rodrigo Custódio
- Urban, Roman
- Urban, Sandro R..
- Urbanczyk, Stephan M
- Urbanczyk, Zbibgniew
- Urbanek, Adam.
- Urbanetz, Catia
- Urbani, Fabrizia
- Urbani, Pasquinell
- Urbaniak, Jacek
- Urban-Mead, Katherine R.
- Urbano Vidales, Guillermina.
- Urbano, Brian