" Rendell H M. Soilerosion and land degradation in Southern Italy[A]. Desertification in Europe [M] . Brussels, Belgium, 1986. 184-193. [2] Clarke M, Rendell H. The Impact of the Farming Practice of Remodeling Hillslope Topography on Badland Morphology and Soil Erosion Processes[M]. CATENA 40; Elsevier, UK, 2000. 229-250. [3] Kingma N. Introduction to Geology of the Agri river valley Z] . ITC field or literature, ITC, the Netherlands, 2002. [4] Ceesvan Westen. Landslide hazard assessment[Z] . ITC handouts, ITC, the Netherlands, 2002."
