- Author: Nevelsteen Yves.
- Language: Esperanto
- Author: Lapenna Ivo.
- Language: Esperanto
- Author: Korĵenkov Aleksander.
- Language: Esperanto
- Author: Soler Y. Valls F.
- Language: Esperanto
- Author: Гакаленко В.Г.
- Language: Esperanto-Русский
La bona lingvo
pdf
- Author: Piron Claude.
- Language: Esperanto
- Author: United States. Dept. of the Army.
- Language: Esperanto-English
- Author: Заменгоф Людвік Лазар.
- Language: Esperanto-Ukrainian