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- United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Commerce, Transportation, and Tourism4
- United States. Congress. House. Committee on Education and Labor. Subcommittee on Elementary, Secondary, and Vocational Education3
- Alderman, David F.2
- National Institute of Standards and Technology (U.S.)2
- Steel, Eric, 1952-2
- United States. Environmental Protection Agency2
- Verkouteren, Jennifer2
- Geological Survey (U.S.)1
- NVLAP (Program : U.S.)1
- United States. Congress. House. Committee on Education and Labor. Subcommittee on Health and Safety1
- United States. Congress. House. Committee on Government Operations. Manpower and Housing Subcommittee1
- United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Coast Guard and Navigation1
- United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Fisheries and Wildlife Conservation and the Environment1
- United States. Congress. Senate. Committee on Labor and Human Resources1
- United States. Congress. Senate. Committee on Labor and Human Resources. Subcommittee on Education, Arts, and Humanities1
- United States. Environmental Protection Agency. Office of the Inspector General1
- United States. Forest Service. Pacific Southwest Region. issuing body1
- United States. General Accounting Office1
- Virta, Robert L.1