title: Removing duplicates in xml with xslt
body: <p>I need to remove duplicates in the following xml:</p>
  
  <pre><code>&lt;ListOfRowIDWithListOfBooks xmlns:bpws="http://schemas.xmlsoap.org/ws/2003/03/business-process/"&gt;
    &lt;RowIDWithListOfBooks&gt;
      &lt;Row_ID&gt;ADOA-XssK&lt;/Row_ID&gt;
      &lt;ListOfBookInfo&gt;
        &lt;book&gt;
          &lt;BookType&gt;Brand&lt;/BookType&gt;
          &lt;BookName&gt;jon&lt;/BookName&gt;
        &lt;/book&gt;
        &lt;book&gt;
          &lt;BookType&gt;Brand&lt;/BookType&gt;
          &lt;BookName&gt;jon&lt;/BookName&gt;
        &lt;/book&gt;
      &lt;/ListOfBookInfo&gt;
    &lt;/RowIDWithListOfBooks&gt;
  &lt;/ListOfRowIDWithListOfBooks&gt;
  </code></pre>
  
  <p>Can anybody help?</p>