• 

  Janz Labortechnik GmbH - Revolver

  http://www.jtl.de/revolver/revolver_d.htm

  JTL - Revolver-Produktion

• 

  Janz Labortechnik GmbH - Revolver

  https://web.archive.org/web/20170917024924/http://www.jtl.de/revolver/revolver_d.htm

  JTL - Revolver-Produktion

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