GU — Guam⧉

<?xml version="1.0" encoding="UTF-8"?>
<Product xmlns="http://ns.editeur.org/onix/3.0/reference">
  <PublishingDetail>
    <CountryOfPublication>
      <CountryCode>GU</CountryCode>
    </CountryOfPublication>
  </PublishingDetail>
</Product>

• Introduced in Issue 0 (or earlier)