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2. Observations of environmental change in Grand Canyon, Arizona
3. Overview of water resources in and near Wichita and Affiliated Tribes treaty lands in western Oklahoma
4. Organic carbon trends, loads, and yields to the Sacramento-San Joaquin Delta, California, water years 1980-2000
5. Organic and trace element contaminants in water, biota, sediment, and semipermeable membrane devices at the Tres Rios Treatment Wetlands, Phoenix, Arizona
6. Occurrence, trends, and sources in particle-associated contaminants in selected streams and lakes in Fort Worth, Texas
7. Occurrence of volatile organic compounds in drinking water from the United States : results from archived chromatograms and water samples, 1989-2000
8. Occurrence of volatile organic compounds in drinking water from the United States : results from archived chromatograms and water samples, 1989-2000
9. Occurrence and transport of diazinon in the Sacramento River, and selected tributaries, California, during two winter storms, January-February 2001
10. Occurrence and status of volatile organic compounds in ground water from rural, untreated, self-supplied domestic wells in the United States, 1986-99
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