{"id":"001303896","type":"book","title":"Probleme der frühmittelalterlichen Grafschaftsverfassung am Beispiel des Rhein-Mosel-Raums","pages":"29-41","container-title":"Jahrbuch für Westdeutsche Landesgeschichte, 17 (1991","author":[{"family":"Nonn","given":"Ulrich"}],"issued":{"raw":"1991"}}