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Author/Creator
- United States203
- United States. Environmental Protection Agency89
- United States. Congress. Senate. Committee on Environment and Public Works87
- ebrary, Inc84
- United States. General Accounting Office58
- Project Muse55
- Council on Environmental Quality (U.S.)38
- United States. Congress. Office of Technology Assessment36
- United States. Congress. Senate. Committee on Interior and Insular Affairs35
- Kraft, Michael E.31
- United States. Congress. Senate. Committee on Environment and Public Works, author25
- Library of Congress. Congressional Research Service, issuing body24
- Resources for the Future23
- United States. Bureau of the Census22
- United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Oversight and Investigations21
- Vig, Norman J.21
- Library of Congress. Congressional Research Service20
- United States. Environmental Protection Agency. Office of the Administrator20
- United States. Environmental Protection Agency. Office of Research and Development19
- United States. Government Accountability Office19