Fundamento de Esperanto
Book by Ludwik Lejzer Zamenhof
Fundamento de Esperanto is a 1905 book by L. L. Zamenhof, in which the author explains the basic grammar rules and vocabulary that constitute the basis of the constructed language Esperanto. Wikipedia
Originally published: 1905
Author: Ludwik Lejzer Zamenhof
Original languages: Esperanto, English, Polish, and more