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Stream water quality in the conterminous United States--status and trends of selected indicators during the 1980's

Smith, Richard A., 1945-

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Notes

  • Title from online title screen.
  • Mode of access: Internet from the USGS web site. Address as of 3/21/06: http://water.usgs.gov/nwsum/sal/index.html; current access available via PURL.