Yohannes Gebre Michael. (1999). The use, maintenance and development of soil and water conservation measures by small scale farming households in different agro-climatic zones of Northern Shewa and Southern Wello, Ethiopia. Univ. of Berne [u.a.].
Chicago-Zitierstil (17. Ausg.)Yohannes Gebre Michael. The Use, Maintenance and Development of Soil and Water Conservation Measures by Small Scale Farming Households in Different Agro-climatic Zones of Northern Shewa and Southern Wello, Ethiopia. Berne: Univ. of Berne [u.a.], 1999.
MLA-Zitierstil (9. Ausg.)Yohannes Gebre Michael. The Use, Maintenance and Development of Soil and Water Conservation Measures by Small Scale Farming Households in Different Agro-climatic Zones of Northern Shewa and Southern Wello, Ethiopia. Univ. of Berne [u.a.], 1999.