Esperanto 100 godini
Subtitle: 1887-1987
By: Nikola Aleksiev.
Publisher: Bŭlgarski esperantski sŭi͡u︡z
Published: 1987
Place of publication: Sofii͡a︡
Language: bul
Number of pages: 234
Subjects: Esperanto
Other titles: Sto godini Esperanto.; Esperanto 100-jara.; Esperanto sto godini.
Notes: Bibliography: p. 222-226.
Title on cover: Sto godini Esperanto.
Title on added t.p.: Esperanto 100-jara.
Summary in Esperanto.