<record>
  <controlfield tag="001">1556</controlfield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Hadron spectroscopy</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Exotic hadrons</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Non-perturbative QCD</subfield>
  </datafield>
</record>