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U.S. Census Bureau.   63
U.S. Census Bureau. Geography Division.   2
U.S.-China Peoples Friendship Association.   c1976 1
U.S. Citizenship and Immigration Services.   9
U.S. Citizenship and Immigration Services. Office of Citizenship.   3
U.S. Clean Coal Technology Demonstration Program.   1990- 1
U.S. Coast and Geodetic Survey.   20
U.S. Commercial Service, / issuing body.  2013 1
U.S. Committee for Refugees.   c1983 1
U.S. Congress. Senate. Committee on the District of Columbia. Subcommittee on Business, Commerce, an   1972 1
U.S. Consumer Product Safety Commission.     1
U.S. Customs Service.   2
U.S. Department of Health and Human Services.     1
U.S. Environmental Protection Agency. Water Quality Office.   1971 1
U.S. EPA Workshop on the Relationship between Exposure Duration and Toxicity (1998 : Arlington, Va)   1998 1
U.S. Fish and Wildlife Service.   82
U.S. Fish and Wildlife Service. Division of Federal Aid.   2000 1
U.S. Fish and Wildlife Service. Office for Human Resources.   1988? 1
U.S. Geological Survey Computer Symposium (2nd : 1978 : Reston, Va.)   1980 1
U.S. Geological Survey Library.   1992 1
U.S. Geological Survey Polar Research Symposium (1983 : U.S. Geological Survey)   1983 1
U.S. Geological Survey Toxic Substances Hydrology Program.   2
U.S. Geological Survey Uranium-Thorium Symposium (2nd : 1977 : Colorado School of Mines)   1976 1
U.S. Geological Survey Workshop on Developments and Applications of Modern Airborne Electromagnetic   1990 1
U.S. Geological Survey Workshop on Geologic Applications of Modern Aeromagnetic Surveys (1987 : Lake   1990 1
U.S. Geological Survey Workshop on the Early Mesozoic Basins of the Eastern United States (2nd : 198   1985 1
U.S. Geological Survey Workshop on the Geology and Geohydrology of the Atlantic Coastal Plain (1988   1992 1
U.S. Global Change Research Program,   5
U.S. Government Bookstore,   2
U.S.-Japan Conference on Sewage Treatment Technology (7th : 1980 : Tokyo, Japan)   1980 1
U.S.-Japan Meeting on Aquaculture (21st : 1992 : Kyoto, Japan)   1994 1
U.S. Lake Survey.   1968 1
U.S. Manga Corps (Firm)   1992 1
U.S./Mexico Border States Conference on: Recreation, Parks, and Wildlife (6th : 1994 : Ciudad Victor   1994 1
U.S. National Alcohol Fuels Commission.   4
U.S. National Bank of Oregon.   1968 1
U.S. National Commission for UNESCO.   1981 1
U.S. Navy Electronics Laboratory.   1952 1
U.S. News & World Report, inc. Marketing Dept.   c1977 1
U.S. Nuclear Regulatory Commission.   1991 1
U.S. Nuclear Regulatory Commission. Office of Nuclear Reactor Regulation. Division of Licensee Perfo   1987 1
U.S. Nuclear Regulatory Commission. Office of Nuclear Reactor Regulation. Division of Systems Integr   1980 1
U.S. Nuclear Regulatory Commission. Office of Nuclear Regulatory Research. Division of Regulatory Ap   1996 1
U.S. Office of Consumer Affairs.   2
U.S. Office of Education.   8
U.S. Playing Card Co.   c2000 1
U.S. Preventive Services Task Force.     1
U.S. Radiation Policy Council.   1980 1
U.S.-Spanish Joint Committee for Educational and Cultural Affairs.   1981 1
U.S. Training and Employment Service.   1971 1
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