000			02253nam a2200457Ia 4500
001			197195
003			BIBL
005			20200624062620.0
008			930129s1993 vaun f m N/A
010			_a 93022546 //r94
035			_a(OCoLC)27975806
040			_aDLC _cDLC _dGPO
041	0		_geng
043			_an-us---
049			_aPUXA
050	0	0	_aQC808.6
074			_a0621-K
082	0	0	_a557.3 _212
086	0		_aI 19.121:9
100	1		_aPhillips, Jeffrey D. _2Local _9150592
245	1	0	_aNational geophysical data grids _h[computer file] _bgamma-ray, gravity, magnetic, and topographic data for the conterminous United States _cby Jeffrey D. Phillips, Joseph S. Duval, and Russell A. Ambroziak.
256			_aComputer data and programs.
260			_a[Reston, VA] _bU.S. Dept. of the Interior, U.S. Geological Survey _aDenver, CO _bFor sale by USGS Map Distribution _c1993.
263			_a9306
300			_a1 computer laser optical disc _bcol. _c4 3/4 in. _e1 manual.
490		0	_aU.S. Geological Survey digital data series _vDDS-9 _2Local _9182290
500			_aTitle from title screen.
500			_aNot copy-protected.
500			_aDisk Characteristics: CD-ROM
520			_aA 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.
521			_aGeologists, scientists, public health officials, and teachers.
538			_aSystem 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.
650		0	_aGeophysics _zUnited States _xDatabases. _2Local _9101990
650		0	_aCD-ROM Fed. Doc. _2Local _971074
650		0	_aGeophysics _zUnited States _xSoftware. _2Local _9101990
700	1	0	_aDuval, Joseph S. _2Local _989492
700	1	0	_aAmbroziak, Russell A. _2Local _951917
710		0	_aGeological Survey (U.S.) _2Local _9227708
753			_aIBM PC _cMS-DOS 5.0
753			_aCD-ROM player
999			_c149158 _d149158