1. Long term fertility studies at Samaru, Nigeria: Comparative effectiveness of separate and combined applications of mineral fertilizers and farmyard manure in maintaining soil productivity under continuous cultivation in the Savanna;Abdullahi,1978
2. Resources en residus de recolte et potentialities pour le biogaz au Senegal;Allard,1981
3. Maize stubble grazing shows weight gain;Anon;Northern Territory rural news,1983
4. Small ruminant production: Review of the literature;Bayer;Working Document. International Livestock Center for Africa, Subhumid Programme, Kaduna, Nigeria,1982
5. Land resources of central Nigeria: Environmental aspects of the Kaduna Plains, Vol. 1. Land forms and soils;Bennett,1977