{"id":"001068073","type":"book","title":"Wczesnośredniowieczne konstrukcje obronne grodu poznańskiego","publisher":"Wydawnictwo Poznańskie","publisher-place":"Pozna","pages":"15-27","container-title":"Poznan we wczesnym średniowieczu : VI","author":[{"family":"Sankiewicz","given":"Paweł"}],"issued":{"raw":"2008"}}