Deutsch: Leono Zamenhof, um 1905. Porträtfoto des Bruders von Ludwik L. Zamenhof Polski: Leon Zamenhof, brat Ludwika Zamenhofa, ok. 1905 r. Esperanto: Leono Zamenhof ĉ. 1905. circa 1905 243 Leon Zamenhof

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Keywords: esperanto