{"id":"001461418","type":"article","title":"A sustainable frontier? The establishment of the Roman Frontier in the Rhine Delta","publisher":"Verlag des Römisch-Germanischen Zentralmuseums","publisher-place":"Mainz","pages":"355-458","container-title":"Jahrbuch des Römisch-Germanischen Zentralmuseums Mainz, 60 ,2 (2013","author":[{"family":"Polak","given":"Marinus."}],"issued":{"raw":"2015"}}