{"id":"001428759","type":"book","title":"Piast Lands in thr 10th Century","publisher":"Verlag des Römisch-Germanischen Zentralmuseums","publisher-place":"Mainz","pages":"71-84","container-title":"Das lange 10. Jahrhundert","author":[{"family":"Urbánczyk","given":"Przemysław"}],"issued":{"raw":"2014"}}