Author:Christian Konrad Sprengel

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Christian Konrad Sprengel


  • Das entdeckte Geheimniß der Natur im Bau und in der Befruchtung der Blumen (1793)

Works by this author published before January 1, 1927 are in the public domain worldwide because the author died at least 100 years ago. Translations or editions published later may be copyrighted. Posthumous works may be copyrighted based on how long they have been published in certain countries and areas.