1. Soil bulk density and water infiltration as affected by grazing systems;Abdel-Magid;Journal of Range Management,1987
2. The Nutrient Requirements of Ruminant Livestock;A.R.C. (Agriculture Research Council),1980
3. Evaluation des pertes de bétail dues a la sécheresse (Niger, Haute Volta);Arnal;Bulletin trimestriel information technique économique de la Communauté Economique de l'Afrique de l'Ouest,1974
4. A critical review of crop residue use as soil amendment in the West African semi-arid tropics;Bationo,1995
5. Le maintien de la fertilité des sols et la nécessité de l'association agriculture — elevage;Berger;Cot. Fib. Trop. XLII,1987