<record>
  <controlfield tag="001">82</controlfield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">SPAPI</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">security of critical infrastructures</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">physical infrastructures</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">policy-based control</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">chemical process facility</subfield>
  </datafield>
</record>