The FAO Agro-ecological Zones Approach to Quantification of Land Resources and Assessment of Crop and Population Potentials. Invited Paper for the Workshop on Agro - Ecological Characterization, Classification and mapping. Organized by the Onternational Agricultural Research Centres of the CGIAR FAO Rome, 14-18 April 1986
Higgins, G.M.; Kassam, A.H.
Food and Agriculture Organization of the United Nations (FAO), Rome.