The European Esperanto Union declared 2012 "The Year of Tibor Sekelj" to honor the 100th anniversary of his birth
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The European Esperanto Union declared 2012 "The Year of Tibor Sekelj" to honor the 100th anniversary of his birth
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-18 from Wikipedia. The archived copy is preserved so this citation survives link rot.