United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Environment and Hazardous Materials., & United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Energy and Air Quality. (2008). The Environmental Protection Agency fiscal year 2008 budget request: Hearings before the Subcommittee on Environment and Hazardous Materials and the Subcommittee on Energy and Air Quality of the Committee on Energy and Commerce, House of Representatives, One Hundred Tenth Congress, first session, March 1 and 8, 2007. Washington: U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O..

United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Environment and Hazardous Materials., and United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Energy and Air Quality. The Environmental Protection Agency Fiscal Year 2008 Budget Request: Hearings Before the Subcommittee On Environment and Hazardous Materials and the Subcommittee On Energy and Air Quality of the Committee On Energy and Commerce, House of Representatives, One Hundred Tenth Congress, First Session, March 1 and 8, 2007. Washington: U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2008.

United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Environment and Hazardous Materials., and United States. Congress. House. Committee on Energy and Commerce. Subcommittee on Energy and Air Quality. The Environmental Protection Agency Fiscal Year 2008 Budget Request: Hearings Before the Subcommittee On Environment and Hazardous Materials and the Subcommittee On Energy and Air Quality of the Committee On Energy and Commerce, House of Representatives, One Hundred Tenth Congress, First Session, March 1 and 8, 2007. Washington: U.S. G.P.O. : For sale by the Supt. of Docs., U.S. G.P.O., 2008.