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Keywords from Image Description:
GdChGedenktafel fr Doebereiner in Jena. en Historic place of Chemie GdCh Memorial plaque for Johann Wolfgang Doebereiner in Jena at the socalled Hellfeldsches Haus Neugasse in September de Historische Sttte der Chemie GdChGedenktafel fr Johann Wolfgang Dbereiner in Jena am sog Hellfeldschen Haus Neugasse im September own Saalebaer