The National Water-Quality Assessment Program [electronic resource] : entering a new decade of investigations / [by Robert J. Gilliom, Pixie A. Hamilton, and Timothy L. Miller].
Mode of access: Internet from the USGS web site. Address as of 8/25/08: http://pubs.usgs.gov/fs/fs-071-01/pdf/fs07101.pdf; current access available via PURL.
Note
Title from title screen (viewed on Aug. 26, 2008).