System requirements: Software may be run from the DVD-ROM; best performance is obtained by running software from local system. Title from PDF title screen. Includes bibliographical references. Also available via Internet.
System requirements: PC with DVD reader, and Windows 2000 or XP, or Macintosh OS9.0.4, 9.1, 9.2, or OS X with 128 MB RAM, or most Unix/Linux systems, all with software to handle files in pdf, or ArcInfo/ArcView. Title from container insert. Also available online via Internet from the USGS web site: Address as of 10/17/08: http://pubs.usgs.gov/ds/270/ ; current access via PURL.