{"id":"001392147","type":"article","title":"The Internal Frontier","publisher":"Oxford University Press","publisher-place":"Oxford","pages":"49-60","container-title":"TRAC 2012 : proceedings of the twenty-second annual Theoretical Roman Archaeology Conference which took place at Goethe University in Frankfurt 29 March-1 April 2012","author":[{"family":"Roth","given":"Roman Ernst"}],"issued":{"raw":"2013"}}