User:Ralf Roletschek


 * Commons: (main account)
 * German Wikiversity (Admin since 2009)
 * German Wikipedia (from 2003; Admin 2006-08)
 * Meta (Admin since 2007)


 * private Homepage, technical information about bicycles in german


 * Instructor: Carpenter
 * Photographers training at Gunter Rinnhofer
 * Studies of Civil Engineering in Berlin; Dipl - Ing (FH)
 * Education qualification for bicycle mechanics
 * Lecturer University Anhalt
 * Lecturer University of Applied Science Hof in Germany
 * Wiki Consultant for Twoonix at Volkswagen AG