{"id":"001225789","type":"book","title":"Sea level, salt marsh and fen: shaping the Severn Estuary Levels in the later quaternary (Ipswichian-Holocene)","pages":"13-34","container-title":"Archaeology in the Severn Estuary, 11 (2000","author":[{"family":"Allen","given":"J. R. L."}],"issued":{"raw":"2000"}}