1. Comparative Effectiveness of Separate and Combined Applications of Mineral Fertilizers and Fym in Maintaining Soil Productivity Under Continuous Cultivation in the Savannah (Long-Term Fertility Studies at Samuru, Nigeria);Abdullah,1978
2. Personal determinants of organic food consumption: a review;Aertsens;Br. Food J.,2009
3. Achieving an African Green Revolution: A vision of sustainable agricultural growth in Africa;AFS,2006
4. The ecological role of biodiversity in agroecosystems;Altieri;Agric. Ecosyst. Environ.,1999
5. The impact of participatory plant breeding;Ashby,2009