Simons, D. B. Bedload equation for ripples and dunes / by D. B. Simons, E. V. Richardson and C. F. Nordin. -- Washington : United States Government Printing Office, 1965 - 9 p. -- (Geological Survey Professional Paper ; 462-H). Subjects--Topical Terms: Sedimentación Universal Decimal Class. No.: 551.3.051