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- evaluation[remove]3
- extension services[remove]3
- extension programs2
- Africa1
- Ethiopia (Africa, Eastern)1
- agronomy1
- coffee1
- communication planning1
- diseases1
- education effects1
- educational methods1
- extension communication1
- extension organizations1
- farmer perceptions1
- issue management1
- learning1
- management information1
- planning1
- productivity1
- program development1