The environment of the Ethiopian Rift Valley compared to other areas of Africa
Russell-Smith, A.
The marginal lands of western Sidamo
Bille, Jean-Claude
Effets du drainage ameliore et de l'application d'engrais sur la croissance de l'ivraie multiflore et de l'avoine sur un sol a proprietes vertiques a Debre Berhan, Ethiopie
Haque, I.
Livestock brands in Borana
Wilding, R.
Hypothetical analysis of Boran calf growth - Energy
Donaldson, T.J.
Energy flows on smallholder farms in the Ethiopian highlands
