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1
The rise and fall of training and visit extension
an Asian mini-drama with an African epilogue
Policy research working paper ; 3928
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3
Agricultural markets and risks
management of the latter, not the former
Policy research working paper ; 2793
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4
Agricultural extension and research
achievements and problems in national systems
A World Bank operations evaluation study
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5
Soil conservation in developing countries
project and policy intervention
Policy and research series ; 8