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Hurni, Hans; Tato, Kebede; Zeleke, Gete (2005). The implications of changes in population, land use and land management on surface runoff in the Upper Nile Basin area of Ethiopia. Mountain Research and Development, 25(2), pp. 147-154. International Mountain Society 10.1659/0276-4741(2005)025[0147:TIOCIP]2.0.CO;2
Tato, Kebede; Hurni, Hans (1992). Soil conservation for survival. Ankeny, USA: Soil and Water Conservation Society (SWCS)