Description
Item Description:Title from title screen (viewed Nov. 5, 2008).
Electronic resource.
Physical Description:vi, 108 pages : digital, PDF file.
Format:Mode of access: Internet from the USGS web site. Address as of 11/5/08: http://nj.usgs.gov/publications/WRIR/00-4140/wrir00-4140.pdf ; current access available via PURL.
Bibliography:Includes bibliographical references (pages 104-108).