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2. Pesticide transformation products : fate and significance in the environment
3. Pesticides in groundwater : hearing before the Subcommittee on Oversight and Investigations of the Committee on Energy and Commerce, House of Representatives, One Hundred Second Congress, first session, May 8, 1991
4. Pesticides in groundwater : hearing before the Subcommittee on Oversight and Investigations of the Committee on Energy and Commerce, House of Representatives, One Hundred Second Congress, first session, May 8, 1991
5. Plan of study for the regional aquifer-system analysis of the Appalachian Valley and Ridge, Piedmont, and Blue Ridge physiographic provinces of the eastern and southeastern United States, with a description of study-area geology and hydrogeology
6. Plan to evaluate the effects of hydrogeologic conditions and human activities on water quality in the coastal plain of New York and New Jersey
7. Potentiometric surface of the Aquia aquifer in southern Maryland, September 1989
8. Potentiometric surface of the Magothy aquifer in southern Maryland, September 1989
9. Potentiometric-surface map of the Coffee Sand aquifer in northeastern Mississippi, August through December 1987
10. Potentiometric-surface map of the Eutaw-McShan aquifer in northeastern Mississippi, August through December 1987
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