3 unnumbered pages : color illustrations, 1 color map ; 28 cm.
General Note:
Caption title. Shipping list no.: 2003-0022-P. "June 2002."
Additional Physical Form:
Also available via Internet at the USGS web site. Address as of 10/29/03: http://erg.usgs.gov/isb/pubs/factsheets/fs06202.pd f; current access available via PURL.