Virginia Tech, Extension Service2019-11-082019-11-081945-04-28http://hdl.handle.net/10919/95460Views of portable infiltration equipment. Oklahoma pattern.positive, 2.5 x 3.5 in.image/jpegIn CopyrightApplied ScienceAgricultureVirginia Extension - Project 10Agricultural EngineeringInfiltrationIrrigationSoil and Water ConservationProject 10 Image - OK Grady County - 1945-04-28PhotographBiological Systems Engineering, Virginia Tech