TY - RPRT TI - Certain flows of air and water in sands during infiltration AU - W.O. Smith AU - H. W. Olsen AU - R.A. Bagnold AU - J. Rice PY - 1966 DO - 10.1097/00010694-196606000-00004 UR - https://pubs.usgs.gov/publication/70221261 ID - 70221261 ER -