Title from title screen (viewed on Aug. 7, 2008). "September 2004."
Bibliography Note
Includes bibliographical references.
Technical Details
Mode of access: Internet from the USGS web site. Address as of 8/7/08: http://erg.usgs.gov/isb/pubs/factsheets/fs2004-3107.html; current access available via PURL.
Action Note
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