TY  - BOOK
AU  - Phillips,Jeffrey D.
AU  - Duval,Joseph S.
AU  - Ambroziak,Russell A.
ED  - Geological Survey (U.S.)  
TI  - National geophysical data grids: gamma-ray, gravity, magnetic, and topographic data for the conterminous United States
T2  - U.S. Geological Survey digital data series
AV  - QC808.6 
U1  - 557.3 12
PY  - 1993///
CY  - [Reston, VA], Denver, CO
PB  - U.S. Dept. of the Interior, U.S. Geological Survey, For sale by USGS Map Distribution
KW  - Geophysics
KW  - United States
KW  - Databases
KW  - Local
KW  - CD-ROM Fed. Doc
KW  - Software
N1  - Title from title screen; Not copy-protected; Disk Characteristics: CD-ROM; Geologists, scientists, public health officials, and teachers
N2  - 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
ER  -