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Liniger, Hanspeter; Thomas, D. B.; Hurni, Hans (1998). WOCAT - World Overview of Conservation Approaches and Technologies - Preliminary results from Eastern and Southern Africa. In: Towards sustainable land use: Furthering cooperation between people and institutions. Advances in Geoecology: Vol. 31 (pp. 1037-1046). Reiskirchen, Germany: Catena
Hurni, Hans (1989). Applied soil conservation research in Ethiopia. In: Thomas, D. B. (ed.) Soil and water conservation in Kenya (pp. 5-21). Nairobi, Kenya: University of Nairobi; Swedish International Development Authority (SIDA)
