MX — México⧉

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

• Introducido en la Issue 0 (o anterior)