http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Preliminary isostatic gravity map of Joshua Tree National Park and vicinity, southern California
Western Earth Surface Processes Team (Geological Survey)
1 electronic map : HTML, digital, PDF file.
Title from HTML index page (viewed on Sept. 14, 2007).
Includes location map, text, and 1 ancillary map.
At head of title: Geophysical Unit of Menlo Park, Calif. (GUMP).
Mode of access: Internet from the USGS web site. Address as of 12/14/07: http://pubs.usgs.gov/of/2007/1218/ ; current access via PURL.
System requirements: PC with Internet access and ability to handle 43 MB .pdf (Portable Document Format) map image file and/or 1 MB Excel "workbook" data file.
U.S. Geological Survey open-file report ; 2007-1218