[Opaque mixture of thoughts - introductory remarks on Hauptmann's works].
D000422:Alchemy; D005858:Germany; D049670:History, 17th Century; D008374:Manuscripts, Medical as Topic / Q000266:history*; D010811:Natural Science Disciplines / Q000266:history*; D010686:Philosophy, Medical / Q000266:history*; D014956:Writing / Q000266:history*