Database for the east half of "Preliminary Geologic Map of the Blythe 30ʹ by 60ʹ quadrangle, California and Arizona" (U.S. Geological Survey Open-file report 90-497) / by Paul Stone ; U.S. Department of the Interior, U.S. Geological Survey
U.S. Geological Survey data series ; 225 Data series (Geological Survey (U.S.)) ; 225.
Mode of access: Internet from the USGS web site. Address as of 1/24/08: http://pubs.usgs.gov/ds/2006/225/ ; current access via PURL. System requirements: PC with Internet access and ability to handle .pdf (Portable Document Format) files and GIS compatible with ARC/INFO version 8.1.2.
Title from HTML index page (viewed on Jan. 26, 2007). At head of title: Western Earth Surface Processes. "This report contains a digital geologic map database created from the east half of the previously published "Preliminary Geologic Map of the Blythe 30ʹ by 60ʹ Quadrangle, California and Arizona".