{"id":"003006775","type":"article","title":"Obsidian in the Early Neolithic of the Upper Vistula basin","publisher":"W. de Gruyter","publisher-place":"Berlin","pages":"19-43","container-title":"Prähistorische Zeitschrift, 96 (2021), 0079-4848","author":[{"family":"Szeliga","given":"Marcin"},{"family":"Osipowicz","given":"Grzegorz"},{"family":"Kasztovszky","given":"Zsolt"}],"issued":{"raw":"2021"}}