Author:Georg Fresenius

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Johann Baptist Georg Wolfgang Fresenius
German physician and botanist who specialized in phycology.


  • Beitrge zur Flora von Aegypten und Arabien (1834) [1]
  • Beiträge zur mykologie (1850) [2]
  • Beiträge zur Kenntniss mikroskopischer Organismen (1858) [3]

Works by this author published before January 1, 1926 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.