Yanda, Pius Zebhe Soil erosion as a major contributing factor to the degradation of arable land in Kondoa district, Central Tanzania: the case of Mwisanga catchment area - Stockholm: Stockholm University, 1991 - 15p.: ill.; 23cm. Subjects--Topical Terms: Soil erosionTanzaniaKondoa LC Class. No.: IRA S623.T3Y3