C. DEVENDRA ( Consulting Tropical Animal Production Specialist ,
Alternative Plant Protein Sources for Pigs and Chickens
Land Degradation in Mixed Farming Systems on the Southern margins of the Kalahari: Soil chemical processes and farmer perceptions Andrew Dougill, Chasca.
Dr Andrew Dougill School of the Environment, University of Leeds Kalahari Sand Soils: Resilience Mechanisms and yet Degradation Processes.