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Groundwater quality hearing before the Subcommittee on Water Resources of the Committee on Public Works and Transportation, House of Representatives, One hundred first Congress, second session, April 25, 1990
- "Groundwater quality : hearing before the Subcommittee on Water Resources of the Committee on Public Works and Transportation, House of Representatives, One hundred first Congress, second session, April 25, 1990"
- "Groundwater quality hearing before the Subcommittee on Water Resources of the Committee on Public Works and Transportation, House of Representatives, One hundred first Congress, second session, April 25, 1990"@en
- "Groundwater quality hearing before the Subcommittee on Water Resources of the Committee on Public Works and Transportation, House of Representatives, One Hundred First Congress, second session, April 25, 1990"@en