| Description | Notes | |
|---|---|---|
| EN | Esperanto | Artificial language |
| FR | Espéranto | Langue artificielle |
| ES | Esperanto | Idioma artificial |
List 74 · Language – based on ISO 639-2/B
epo — Esperanto
<?xml version="1.0" encoding="UTF-8"?>
<Product xmlns="http://ns.editeur.org/onix/3.0/reference">
<DescriptiveDetail>
<Language>
<LanguageCode>epo</LanguageCode>
</Language>
</DescriptiveDetail>
</Product>- Introduced in Issue 0 (or earlier)