http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Geologic map of the San Francisco Bay region
1 electronic map : HTML, digital, PDF file.
by R.W. Graymer [and others] ; prepared in cooperation with the California Geological Survey.
Relief shown by contours and spot heights.
Title from PDF title screen (viewed on Apr. 21, 2008).
Includes text, descriptive index to geologic materials with ill. (some col.), 4 ancillary maps, and 4 diagrams.
"Published in commemoration of the 100th anniversary of the 1906 earthquake."
Mode of access: Internet from the USGS web site. Address as of 4/21/08: http://pubs.usgs.gov/sim/2006/2918/ ; current access via PURL.