{"id":"002003870","type":"book","title":"Tracing the Late Viking Age and Medieval butter economy","publisher":"Oxford University Press","publisher-place":"Oxford","pages":"278-296","container-title":"Silver, butter, cloth","author":[{"family":"Critch","given":"Aaron J."},{"family":"Harland","given":"Jeniffer F."},{"family":"Barrett","given":"James H."}],"issued":{"raw":"2019"}}