Title from title screen (viewed on August 5, 2004).
"January 1995."
Summary
A fact sheet about the CD-ROM of gridded gamma-ray, gravity, magnetic, and topographic data for the conterminous United States with display software that allows the user to view data in image format and to overlay geology, state and county boundaries plus U.S. Geological Survey software for analyzing and processing potential-field geophysical data.