Description
Item Description:Title from title screen (viewed Oct. 31, 2008).
Electronic resource.
Physical Description:v, 29 pages : digital, PDF file.
Format:Mode of access: Internet from the USGS web site. Address as of 10/31/08: http://ny.water.usgs.gov/pubs/wri/wri004196/wrir00-4196.pdf ; current access available via PURL.