{"id":"001001914","type":"book","title":"Birka: its waterways and hinterland","publisher":"The Viking Ship Museum, Roskilde","publisher-place":"Roskilde","pages":"99-104","container-title":"Aspects of maritime Scandinavia AD 200-1200. Proceedings of the Nordic Seminar on Maritime Aspects of Archaeology, Roskilde, 13th-15th march, 1989","author":[{"family":"Ambrosiani","given":"Björn."}],"issued":{"raw":"1991"}}