Authors

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U.S. 109th Congress (1) U.S. Congress (2) U.S. Congress. Energy & Commerce Committee (1)
U.S. Department of Energy, Office of Fossil Energy and National Energy Technology Laboratory (2) U.S. Department of Energy(U.S. DOE) (1) U.S. Department of Health and Human Services | Agency of Toxic Substances and Disease Registry (1)
U.S. Energy Development Corporation (1) U.S. Energy Information Administration (1) U.S. Environmental Protection Agency(EPA) (11)
U.S. EPA Office of Atmospheric Programs (1) U.S. Federal Energy Regulatory Commission(FERC) (1) U.S. General Accounting Office(GAO) (1)
U.S. Senate (2) un-naturalgas.org (1) Union of Concerned Scientists (2)
Unitarian Universalist Ministry for Earth (1) Universal Well Services (1) University at Buffalo (1)
University of Pittsburgh (1) Urbina, Ian (1)