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Keywords from Image Description:
potsdamdetal. Photograph detail from the German Esperanto Congress Potsdam First row third from right UEA chairman Edmond Privat Archives of Universala Esperanto Asocio author Osmo Buller Gxenerala Direktoro UEA Esperanto in Germany History of Esperanto PDold Edmond Privat in Potsdam Events in Potsdam Arnhold family