Title from title screen (viewed on Sept. 21, 2001).
"Prepared in cooperation with USDA, Natural Resources Conservation Service [and] USDI, Bureau of Land Management."
"Internet published: May 1998."
"This electronic document supplements the 1994 map, 'Ecological units of California, ' and the book published in 1997. The text is the same, but many more photos illustrate the descriptions."
Includes bibliographical references.
Mode of access: Internet from the Forest Service web site. Address as of 10/23/08: http://www.fs.fed.us/r5/projects/ecoregions/; current access available via PURL.