"U.S. Army Engineer Waterways Experiment Station." . . "United States. Army. Corps of Engineers." . . "Environmental Laboratory (U.S.)" . . "Habitat (Ecology) Modification." . . "Environmental Impact Research Program (U.S.)" . . . . . . . . . . . . . . . . . . . . "Rangeland drill : section 8.4.3, US Army Corps of Engineers wildlife resources management manual" . "Rangeland drill : section 8.4.3, US Army Corps of Engineers wildlife resources management manual"@en . . . . . . . . . . "Rangelands Revegetation Equipment and supplies." . . . . "Drills (Planting machinery)" . . "Wildlife management." . .