A comparative method for the collection of labor utilization data for secondary crops : the example of cocoyam and soybean farming systems surveys in west Africa
KNIPSCHEER, H. C.
A comparative method for the collection of labor utilization data for secondary crops : the example of cocoyam and soybean farming systems surveys in west Africa - Ibadan International Institute of Tropical Agriculture 1981 - 12p.
agriculture
West Africa
A comparative method for the collection of labor utilization data for secondary crops : the example of cocoyam and soybean farming systems surveys in west Africa - Ibadan International Institute of Tropical Agriculture 1981 - 12p.
agriculture
West Africa