National geophysical data grids
Subtitle: gamma-ray, gravity, magnetic, and topographic data for the conterminous United States
By: by Jeffrey D. Phillips, Joseph S. Duval, and Russell A. Ambroziak
Series: U.S. Geological Survey digital data series -- DDS-9
Publisher: U.S. Dept. of the Interior, U.S. Geological Survey; For sale by USGS Map Distribution
Published: 1993
Place of publication: Reston, VA; Denver, CO
Format: [computer file] :
Subjects: Geophysics; Databases; Software
Description: A package including 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 and state and county boundaries and U.S. Geological Survey software for analyzing and processing potential-field geophysical data.
Notes: Title from title screen.

Not copy-protected.

Geologists, scientists, public health officials, and teachers.

System requirements: IBM or compatible PC; 640K RAM; MS-DOS or PC-DOS 5.0 or later; Microsoft MSCDEX 2.1 or later; CD-ROM drive with ISO 9660 software driver; hard disk drive; SuperVGA graphics; math coprocessor.