The physics of sediment transport by wind and water : a collection of hallmark papers / by R.A. Bagnold ; prepared under the auspices of the Committee on Sedimentation of the Hydraulics Division of the American Society of Civil Engineers ; edited by Colin R. Thorne, Robert C. MacArthur, and Jeffrey B. Bradley. - Bagnold, Ralph A. (Ralph Alger), 1896-1990 (American Society of Civil Engineers, 1988)