Description
Item Description:Title from index screen (viewed March 5, 2002).
Electronic resource.
Format:Mode of access: Internet from the USGS Web site. Address as of 4-28-03: http://mi.water.usgs.gov/pubs/WRIR/WRIR01-4053/WRIR01-4053LW.php; current access is available via PURL.
Bibliography:Includes bibliographical references.