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Testimony before the Committee on Energy and Natural Resources, United States Senate
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Testimony before the Committee on Energy and Natural Resources, Subcommittee on Energy Conservation and Regulation, United States Senate
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Testimony before the Subcommittee on Energy Research and Natural Resources, Committee on Energy and Natural Resources, United States Senate
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- Report
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Testimony before the Subcommittee on Energy Research and Water Resources, Senate Committee on Interior and Insular Affairs
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Testimony before the Subcommittee on Economic Stabilization, Committee on Banking, Currency and Housing, U.S. House of Representatives
- Report
Testimony before the Subcommittee on Economic Stabilization, Committee on Banking, Currency, and Housing, U.S. House of Representatives