{"id":"001588773","type":"book","title":"Polityka zewnetrzna Ksieştwa Rugii (1128 - 1328)","publisher":"Panstwowe Wyd. Naukowe","publisher-place":"Warszawa [u.a","author":[{"family":"Osięgłowski","given":"Janisław 1942-2016"}],"issued":{"raw":"1975"}}