Chicago

Swanson, Frederick J. (Frederick John), 1943-, Douglas N Swanston, C. T Dyrness, Kermit Cromack, R. L Fredriksen, Duane G Moore, 1944- Glenn et al. 1972. A Conceptual Model of Soil Mass Movement, Surface Soil Erosion, and Stream Channel Erosion Processes. : Seattle : University of Washington.