Water quality in the upper Illinois River Basin, Illinois, Indiana, and Wisconsin, 1999-2001 /
Groschen, G. E.
Geological Survey (U.S.)
Reston, Va. : U.S. Department of the Interior, U.S. Geological Survey ; Denver, CO : For sale by U.S. Geological Survey, Information Services,
2004.
Includes bibliographical references.
Water quality
Also available via Internet from the USGS Web site. Address as of 6/01/04: http://water.usgs.gov/pubs/circ/2004/1230/; current access available via PURL.