{"id":"001048092","type":"book","title":"Niektóre sporne problemy dotyczące życia i działalności Olafa Tryggvasona","publisher":"Wydawnictwo Instytutu Archeologii i Etnologii PAN","publisher-place":"Szczecin/Wrocław","pages":"587-594","container-title":"Świat Słowian wczesnego średniowiecza","author":[{"family":"Morawiec","given":"Jakub"}],"issued":{"raw":"2006"}}