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  1. 1
    MTBE and other volatile organic compounds : new findings and implications on the quality of source waters used for drinking-water supplies /
    by Zogorski, John S.
    Published 2001
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    Government Document eBook
  2. 2
    Monitoring and assessing our nation's water quality /
    by Mallard, Gail E.
    Published 2002
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    Government Document Book
  3. 3
    Monitoring our rivers and streams /
    by Erwin, Martha L.
    Published 2002
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    Government Document Book
  4. 4
    Mercury in stream ecosystems : new studies initiated by the U.S. Geological Survey /
    by Brigham, Mark E.
    Published 2003
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    Government Document Book
  5. 5
    Water quality in the nation's streams and aquifers : overview of selected findings, 1991-2001 /
    by Hamilton, Pixie A.
    Published 2004
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    Government Document Book
  6. 6
    Volatile organic compounds in the nation's ground water and drinking-water supply wells : a summary /
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  7. 7
    Assessing the vulnerability of public-supply wells to contamination from urban, agricultural, and natural sources /
    by Eberts, Sandra M.
    Published 2005
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  8. 8
    Pesticides in the nation's streams and ground water, 1992-2001 : a summary /
    by Gilliom, Robert J.
    Published 2006
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    Government Document eBook
  9. 9
    National Water-Quality Assessment Program, source water-quality assessments /
    by Delzer, Gregory C.
    Published 2007
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    Government Document eBook
  10. 10
    New studies initiated by the U.S. Geological Survey : effects of nutrient enrichment on stream ecosystems /
    by Munn, Mark D.
    Published 2003
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    Government Document eBook
  11. 11
    Studies by the U.S. Geological Survey on sources, transport, and fate of agricultural chemicals /
    by Capel, Paul D.
    Published 2004
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    Government Document eBook
  12. 12
    National Water-Quality Assessment Program--Cycle II : regional assessments of aquifers /
    by Lapham, Wayne W.
    Published 2005
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    Government Document eBook
  13. 13
    Effects of urbanization on stream ecosystems /
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  14. 14
    The National Water-Quality Assessment Program : entering a new decade of investigations /
    by Gilliom, Robert J.
    Published 2001
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  15. 15
    Man-made organic compounds in source water of nine community water systems that withdraw from streams, 2002-05 /
    by Kingsbury, James A.
    Published 2008
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  16. 16
    Quality of water from domestic wells in principal aquifers of the United States, 1991-2004 : overview of major findings /
    by Desimone, Leslie A.
    Published 2009
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    Government Document eBook
  17. 17
    Are fertilizers and pesticides in the ground water? : a case study of the Delmarva Peninsula, Delaware, Maryland, and Virginia /
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    Government Document eBook
  18. 18
    Persistence of the DDT pesticide in the Yakima River Basin, Washington /
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    Government Document eBook
  19. 19
    Hydrogeology and analysis of the ground-water flow system in the Coastal Plain of southeastern Virginia /
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    Government Document eBook
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