{"id":"000440799","type":"article","title":"The UNESCO Libyan Valleys Survey, 21. Geomorphological studies of the Romano-Libyan farm, its floodwater control structures and weathered building stone at site Lm 4, at the confluence of Wadi el-Amud and Wadi Umm el-Bagul in the Libyan pre-desert","pages":"25-42","container-title":"Libyan Studies, 21.1990","author":[{"family":"Gilbertson","given":"D.D."}],"issued":{"raw":"1990"}}