Response of stream chemistry during base flow to gradients of urbanization in selected locations across the conterminous United States, 2002-04 [electronic resource] / by Lori A. Sprague ... [et al.].
Imprint
Reston, Va. : U.S. Dept. of the Interior, U.S. Geological Survey, 2007.
Mode of access: Internet from the USGS web site. Address as of 9/2/08: http://pubs.usgs.gov/sir/2007/5083/pdf/SIR07-5083%5F508.pdf; current access available via PURL.
Note
Title from title screen (viewed on Sept. 2, 2008).
