http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Profiles of gamma-ray and magnetic data from aerial surveys over the conterminous United States
3 CD-ROMs : color ; 4 3/4 in. + 1 manual.
Contains: 1) images, generated from geophysical data, of gamma-ray data (uranium, thorium, and potassium channels), Bouger gravity, isostatic residual gravity, aeromagnetic anomalies, topography, and bathymetry data; 2) software for displaying and analyzing images; and 3) software for displaying and examining profile data from aerial surveys flown as part of National Uranium Resource Evaluation (NURE) Program of U.S. Department of Energy.
disc 1. Western United States from Latitude 34⁰ to 49⁰ N. and from Longitude 108⁰ to 126⁰ W.-- disc 2. Central and eastern United States from Latitude 35⁰ to 49⁰ N. and from Longitude 66⁰ to 108⁰ W.-- disc 3. Southern United States from Latitude 24⁰ to 35⁰ N. and from L
by Joseph S. Duval and Frederic E. Riggle.
Manual not distibuted to depository libnraries.
These discs supersede DDS-31, issued 1995.
System requirements: 486DX2 or Pentium PC; 16MB RAM; Windows 95 or higher; MSCDEX 2.1 or higher; SVGA graphics display; hard disk drive; color monitor; CD-ROM drive with ISO 9660 software driver.
U.S. Geological Survey digital data series ; DDS-31, release 2