01942nam a2200361Ia 4500001000700000003000500007005001700012008004100029035002000070040002800090074001100118086001600129110003800145245014100183246004000324246003500364256003100399260009300430300005100523490006200574500003300636500003300669500003300702505017500735520020400910538025901114650003901373650002801412650004601440700003001486700003601516700002801552197194BIBL20200624062620.0950222s1995    vaun   f   m f      eng d  a(OCoLC)32033586  aGIScGISdGPOdCUVdGPO  a0621-K0 aI 19.121:14  aGeological Survey (U.S.)  2Local10aNational geochronological and natural radioelement data basesh[computer file]cU.S. Department of the Interior, U.S. Geological Survey.34aNational geochronological data base34aNatural radioelement data base  aComputer data and program.  a[Reston, Va.?]bThe Surveya[Denver, Colo.bFor sale by USGS Distribution Branch]c1995.  a1 computer laser optical discbcol.c4 3/4 in. 0aU.S. Geological Survey digital data seriesvDDS-142Local  aTitle from container insert.  aShipping list no.: 95-006-E.  aDisk Characteristics: CD-ROM1 aA. National geochronological data base / by Robert E. Zartman, Charles A. Bush, and Carl Abston -- B. Natural radioelement data base / by Charles A. Bush and Carl Abston.  aThe NGDB contains more than 30,000 individual published ages of rocks and minerals in the United States; while the NRDB contains analyses of the natural radioelements from more than 8500 whole rocks.  aSystem requirements: IBM or compatible personal computer; 640 kb RAM; MS or PC-DOS version 5.0 or later; SVGA graphics card (640x480); SGVA color monitor; Microsoft MSCDEX version 2.1 or later; CD-ROM drive with ISO 9660 software driver; hard disk drive. 0aGeological timexDatabases.2Local 0aCD-ROM Fed. Doc.2Local 0aRadioactive substancesxDatabases.2Local10aZartman, Robert E.2Local10aAbston, C. C.q(Carl C.)2Local10aBush, Charles A.2Local