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Abandoned mines and mercury in California : oversight field hearing before the Subcommittee on Energy and Mineral Resources of the Committee on Natural Resources, U.S. House of Representatives, One Hundred Eleventh Congress, first session, November 23, 2009, in Sacramento, California
- "Abandoned mines and mercury in California : oversight field hearing before the Subcommittee on Energy and Mineral Resources of the Committee on Natural Resources, U.S. House of Representatives, One Hundred Eleventh Congress, first session, November 23, 2009, in Sacramento, California"@en
- "Abandoned mines and mercury in California oversight field hearing before the Subcommittee on Energy and Mineral Resources of the Committee on Natural Resources, U.S. House of Representatives, One Hundred Eleventh Congress, first session, November 23, 2009, in Sacramento, California"@en