<?xml version="1.0"?>
<library>
   <book isbn="978-0-59-600173-5">
      <title>Perl Best Practices</title>
      <author>Damian Conway</author>
      <pages>544</pages>
      <published year="2005" month="07" day="12" />
   </book>
   <book isbn="978-0-59-600027-1">
      <title>Programming Perl (3rd Edition)</title>
      <author>Larry Wall</author>
      <author>Tom Christiansen</author>
      <author>Jon Orwant</author>
      <pages>1092</pages>
      <published year="2000" month="07" day="14" />
   </book>
</library>