{"id":"001064087","type":"book","title":"Why there? The positioning of forts along the riverine frontiers of the Roman empire","publisher":"Journal of Roman Archaeology","publisher-place":"Portsmouth, Rhode Island","pages":"103-114","container-title":"The army and frontiers of Rome : Papers offered to David J. Breeze on the occasion of his sixty-fifth birthday and his retirement from Historic Scotland","author":[{"family":"Sommer","given":"C. S."}],"issued":{"raw":"2009"}}