{"id":"001211337","type":"book","title":"Kruszec srebrny i złoty na ziemiach polskich we wczesným średniowieczu","pages":"125-146","container-title":"Studie z Dějin Hornictví. Studies in the History of Mining, 21 (1991","author":[{"family":"Kóčka-Krenz","given":"Hanna"}],"issued":{"raw":"1991"}}