citation
Mamo, T., Tedla, A. and Erkosa, T. 1994. The effect of undersowing wheat with clovers on wheat grain yield, total crop residue yield and nutritive value of straw and fodder grown on Vertisols in Ethiopia. IN: Tanner, D.G.(ed). Developing Sustainable Wheat Production Systems. The Eighth Regional Wheat Workshop for Eastern, Central and Southern Africa. Addis Ababa, Ethiopia: CYMMIT. 201-206.