| Author: | Witteryck, Antoon Jozef, 1865-1934 |
| Subject: | PM, Esperanto, Ido |
| Format: | Electronic text |
| Date issued: | 2012 |
| Language: | |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | De waarheid over Esperanto en Ido = La vérité sur l'Esperanto et l'Ido [electronic resource] / Antoon Jozef Witteryck |