>
        optional
       </td>
       <td>
       </td>
      </tr>
      <tr>
       <td>
        40
       </td>
       <td>
        taxonomicClassifierList
       </td>
       <td>
        <code>
         list&lt;
         <code>
          string
         </code>
         &gt;
        </code>
       </td>
       <td>
        This field specifies a list of taxonomic classifiers that place this
article into a hierarchy of articles. The individual terms of each
taxonomic classifier are separated with the '