{"id":"001011787","type":"book","title":"Early medieval hillforts in Polish lands in the 6th to the 8th centuries: problems of origins, funtion, and spatial organization","publisher":"Unwin Hyman","publisher-place":"London/Boston","pages":"147-156","container-title":"From the Baltic to the Black Sea : Studies in medieval archaeology","author":[{"family":"Kobyliński","given":"Zbigniew 1953-"}],"issued":{"raw":"1990"}}