{"id":"001516446","type":"book","title":"Ältere Marburger Befestigungsanlagen im Spiegel der Schriftquellen","publisher":"Habelt","publisher-place":"Wiesbaden","pages":"147-161","container-title":"Fundberichte aus Hessen, 53/54 (2013/14","author":[{"family":"Ritzerfeld","given":"Ulrich"}],"issued":{"raw":"2017"}}