Description
Item Description:Title from PDF title screen (viewed on Dec. 9, 2003).
Electronic resource.
Physical Description:Also available in print version from U.S. Geological Survey Information Services, Denver, Colo.
Format:System requirements: Adobe Acrobat Reader.
Mode of access: Internet from the USGS web site. Address as of 3/11/04: http://az.water.usgs.gov/pubs/pdfs/OFR%2002%96485%20WEB.pdf; current access available via PURL.
Bibliography:Includes bibliographical references.