{"id":"001531068","type":"article","title":"Quarries on the Raetian Limes, the height and construction of the wall","publisher":"Archaeopress Publishing Ltd.","publisher-place":"Oxford","pages":"642-650","container-title":"Roman frontier studies 2009: proceedings of the XXI International Congress of Roman Frontier Studies (Limes Congress) held at Newcastle-upon-Tyne in August 2009","author":[{"family":"Sommer","given":"Sebastian"}],"issued":{"raw":"2017"}}