{"id":"001001970","type":"book","title":"Geophysical methods in marine archaeological reconnaissance","publisher":"The Viking Ship Museum, Roskilde","publisher-place":"Roskilde","pages":"249-258","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":"Abrahamsen","given":"Niels"}],"issued":{"raw":"1991"}}