{"id":"001438925","type":"book","title":"Osiągnięcia Józefa Kostrzewskiego w badaniach nad wczesnym średniowieczem w Polsce","publisher":"Wyd. Muzeum archeologicziego","publisher-place":"Poznan","pages":"89-100","container-title":"Fontes Archaeologici Posnanienses, 50 (2014","author":[{"family":"Brzostowicz","given":"Michal"}],"issued":{"raw":"2014"}}