Browsing by Author "Norman, D.W."
Now showing items 1-3 of 3
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Farming systems development and soil conservation
Norman, D.W.; Douglas, Malcolm (FAO, 1994) -
Farming systems development and soil conservation
Norman, D.W.; Douglas, Malcolm (FAO, 1994) -
The farming systems approach to development and appropriate technology generation
Norman, D.W.; Modiakgotla, E.; Siebert, J.D.; Worman, F.D. (FAO, 1995)