{"id":"001543509","type":"article","title":"Defensive system of ancient city volubilis. State of research and new perspectives","publisher":"Instytut Kultury Europejskiej UAM","publisher-place":"Gniezno","pages":"513-528","container-title":"Studia Europaea Gnesnensia, 16 (2017","author":[{"family":"Czapski","given":"Maciej"}],"issued":{"raw":"2017"}}