Virginia Tech, Extension Service2019-07-182019-07-181958-01-03http://hdl.handle.net/10919/91724cleaning operation on channelnegative, 4x5 in.image/jpegIn CopyrightApplied ScienceAgricultural EngineeringAgricultureVirginia Extension - Project 10Runoff RatesWater RunoffSoil and Water ConservationProject 10 Image - VA Halifax - 1958-01-03PhotographBiological Systems Engineering, Virginia Tech