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<?xml version="1.0"?>
<api>
  <query>
    <random>
      <page id="99" ns="0" title="Circuitos RC y LR (Fis1530 Fis 152 DS)" />
      <page id="266" ns="0" title="Ley de Stefan-Boltzmann (Alta temperatura) (Fiz0211)" />
    </random>
  </query>
</api>