Title from PDF title screen (viewed on Jan. 22, 2008).
At head of title on HTML title screen: Volcano Hazards Program.
Includes bibliographical references.
Mode of access: Internet via the USGS web site. Addresses as of 07/09/08: http://pubs.usgs.gov/of/2007/1401/of2007-1401en%5ftext.pdf and http://pubs.usgs.gov/of/2007/1401/of2007-1401en%5fplate1.pdf; current access available via PURL.