Supercedes U.S. Geological Survey open-file report 99-50B.
System Details
Mode of access: Internet from the USGS Web site. Address as of 6/07/04: http://pubs.usgs.gov/bul/b2201-a/b2201-a.pdf; current access is available via PURL.
Note
Title from PDF title screen (viewed June 7, 2004).