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Water Quality in the Potomac River Basin, Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia, 1992-96

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REFERENCES

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Zappia, Humbert, 1996, Chlordane, DDT, PCB's and other selected organic compounds in Asiatic clams and yellow bullhead in the Potomac River Basin, 1992: U.S. Geological Survey Water- Resources Investigations Report 96-4210, 12 p.

Zaugg, S.D., Sandstrom, M.W., Smith, S.G., and Fehlberg, K.M., 1995, Methods of analysis by the U.S. Geological Survey National Water Quality Laboratory - Determination of pesticides in water by C-18 solid-phase extraction and capillary-column gas chromatography/mass spectrometry with selected ion monitoring: U.S. Geological Survey Open-File Report 95-181, 49 p.


U.S. Geological Survey Circular 1166

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Suggested citation:
Ator, S.W., Blomquist, J.D., Brakebill, J.W., Denis, J.M., Ferrari, M.J., Miller, C.V., and Zappia, H., 1998, Water Quality in the Potomac River Basin, Maryland, Pennsylvania, Virginia, West Virginia, and the District of Columbia, 1992-96: U.S. Geological Survey Circular 1166, on line at <URL: https://water.usgs.gov/pubs/circ1166>, updated June 10, 1998 .

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Last modified: Tue Jul 14 13:43:42 1998