<library>
  <NAME>Ruby library</NAME>
  <BOOK isbn="0974514055">
    <title>Programming Ruby - 2nd Edition</title>
    <description>Second edition of the great book out there</description>
    <contributions>
      <contributor role="author">
        <name>David Thomas</name>
      </contributor>
      <contributor role="supporting author">
        <name>Andrew Hunt</name>
      </contributor>
      <contributor role="supporting author">
        <name>Chad Fowler</name>
      </contributor>
    </contributions>
  </BOOK>
  <BOOK isbn="0974514055">
    <title>Agile Web Development with Rails</title>
    <description>Jolt winning original Ruby on Rails book</description>
    <contributions>
      <contributor role="author">
        <name>David Thomas</name>
      </contributor>
      <contributor role="author">
        <name>David Heinemeier Hansson</name>
      </contributor>
    </contributions>
  </BOOK>
</library>