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  <titleInfo>
    <title>National geophysical data grids</title>
    <subTitle>gamma-ray, gravity, magnetic, and topographic data for the conterminous United States</subTitle>
  </titleInfo>
  <name type="personal">
    <namePart>Phillips, Jeffrey D.</namePart>
    <role>
      <roleTerm authority="marcrelator" type="text">creator</roleTerm>
    </role>
  </name>
  <name type="personal">
    <namePart>Duval, Joseph S.</namePart>
  </name>
  <name type="personal">
    <namePart>Ambroziak, Russell A.</namePart>
  </name>
  <name type="corporate">
    <namePart>Geological Survey (U.S.)</namePart>
  </name>
  <typeOfResource>text</typeOfResource>
  <genre authority="marc">theses</genre>
  <originInfo>
    <place>
      <placeTerm type="code" authority="marccountry">vau</placeTerm>
    </place>
    <place>
      <placeTerm type="text">Reston, VA]</placeTerm>
    </place>
    <place>
      <placeTerm type="text">Denver, CO</placeTerm>
    </place>
    <publisher>U.S. Dept. of the Interior, U.S. Geological Survey</publisher>
    <publisher>For sale by USGS Map Distribution</publisher>
    <dateIssued>1993</dateIssued>
    <issuance>monographic</issuance>
  </originInfo>
  <language>
    <languageTerm authority="iso639-2b" type="code">N/A</languageTerm>
  </language>
  <language objectPart="accompanying material">
    <languageTerm authority="iso639-2b" type="code">eng</languageTerm>
  </language>
  <physicalDescription>
    <form authority="marcform">print</form>
    <form authority="gmd">computer file</form>
    <form>Computer data and programs.</form>
    <extent>1 computer laser optical disc col. 4 3/4 in. 1 manual.</extent>
  </physicalDescription>
  <abstract>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.</abstract>
  <targetAudience>Geologists, scientists, public health officials, and teachers.</targetAudience>
  <targetAudience authority="marctarget">specialized</targetAudience>
  <note type="statement of responsibility">by Jeffrey D. Phillips, Joseph S. Duval, and Russell A. Ambroziak.</note>
  <note>Title from title screen.</note>
  <note>Not copy-protected.</note>
  <note>Disk Characteristics: CD-ROM</note>
  <note>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.</note>
  <subject>
    <geographicCode authority="marcgac">n-us---</geographicCode>
  </subject>
  <subject authority="lcsh">
    <topic>Geophysics</topic>
    <geographic>United States</geographic>
    <topic>Databases</topic>
  </subject>
  <subject authority="lcsh">
    <topic>CD-ROM Fed. Doc</topic>
  </subject>
  <subject authority="lcsh">
    <topic>Geophysics</topic>
    <geographic>United States</geographic>
    <topic>Software</topic>
  </subject>
  <classification authority="lcc">QC808.6</classification>
  <classification authority="ddc" edition="12">557.3</classification>
  <classification authority="sudocs">I 19.121:9</classification>
  <classification authority="">I 19.121:9</classification>
  <identifier type="lccn">93022546 //r94</identifier>
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    <recordCreationDate encoding="marc">930129</recordCreationDate>
    <recordChangeDate encoding="iso8601">20200624062620.0</recordChangeDate>
    <recordIdentifier source="BIBL">197195</recordIdentifier>
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