{"id":"001052462","type":"book","title":"Ekspansja Polski na Bałtyk za Mieszka I","publisher":"Zakład Narodowy Imienia Ossolińskich","publisher-place":"Wrocław","pages":"410-417","container-title":"Liber Iosepho Kostrzewski octogenario a veneratoribus dicatus","author":[{"family":"Kowalenko","given":"Władysław"}],"issued":{"raw":"1968"}}