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  • M0012621: Illustration of an electrical machine invented by Otto von Guericke
  • M0012621: Illustration of an electrical machine invented by Otto von Guericke
  • M0012621: Illustration of an electrical machine invented by Otto von Guericke
  • M0012621: Illustration of an electrical machine invented by Otto von Guericke
  • M0012621: Illustration of an electrical machine invented by Otto von Guericke