Author & Contributor Index
- Unger, Benjamin Peter
- Unger, David James
- Unger, John Thomas
- Unger, Leon
- Unger, Mary
- Unger, W.L.
- Ungor, Alper
- Ungsitipoonporn, Siripen
- Uni High Students
- Unikel, Irving Phillip
- United States. Agency for International Development. Office of Population
- United States Agricultural Research Service
- United States Air Force
- United States Army Corps of Engineers
- United States. Army. Corps of Engineers. Chicago District
- United States. Army. Corps of Engineers. Rock Island District
- United States. Bureau of Education for the Handicapped
- United States. Bureau of Land Management
- United States Bureau of Mines
- United States. Bureau of Public Roads
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on International Operations
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Western Hemisphere Affairs
- United States. Defense Communications Agency. Command and Control Technical Center
- United States. Defense Communications Agency. Joint Technical Support Activity
- United States. Department of Agriculture.
- United States. Department of Agriculture. Economic Research Service
- United States. Department of Defense
- United States. Department of Energy
- United States Department of Energy. Office of Health and Environmental Research
- United States. Department of Labor. Manpower Administration
- United States. Department of the Interior
- United States. Department of Transportation
- United States. Deptartment of Agriculture
- United States. Division of Air Pollution
- United States. Energy Information Administration
- United States. Energy Research and Development Administration
- United States. Environmental Protection Agency
- United States. Environmental Protection Agency. Office of Drinking Water.
- United States. Environmental Protection Agency. Office of Research and Development
- United States. Environmental Protection Agency. Waste Reduction Innovative Technology Evaluation (USEPA EPA WRITE)
- United States. Federal Emergency Management Agency
- United States. Federal Energy Administration
- United States. Federal Energy Administration. Energy Resource Development. Office of Coal
- United States. Federal Preparedness Agency
- United States. Fish and Wildlife Service
- United States. Food Administration. Federal Milk Commission for New England
- United States. Forest Service
- United States. Forest Service. Eastern Region
- United States. Forest Service. Eastern Region. Threatened and Endangered Species Program
- United States Geological Survey