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<item>
  <id>70146163</id>
  <dt>a</dt>
  <an>70146163</an>
  <augroup>
    <au>Hsieh, Jonathan M.</au>
    <au>Gribble, Steven D.</au>
    <au>Levy, Henry M.</au>
  </augroup>
  <ti>The architecture and implementation of an extensible web crawler</ti>
  <so>NSDI, 329-344 (2010).</so>
  <py>2010</py>
  <pu></pu>
  <lagroup>
    <la>EN</la>
  </lagroup>
  <ccgroup>
  </ccgroup>
  <utgroup>
  </utgroup>
  <cigroup>
  </cigroup>
  <ligroup>
    <li>http://www.usenix.org/events/nsdi10/tech/full_papers/hsieh.pdf</li>
  </ligroup>
</item>