. . . . . . . . . . . . "Plastic concrete cutoff walls for earth dams"@en . . . . . . . . . . . . "Earth dams Maintenance and repair." . . "Repair, Evaluation, Maintenance, and Rehabilitation Research Program." . . "Resin concrete." . . "U.S. Army Engineer Waterways Experiment Station." . . "Seepage." . . "United States. Army. Corps of Engineers." . . . .