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- Africa1
- Kenya (Africa, Eastern)1
- Uganda (Africa, Eastern)[remove]1
- communication1
- cooperation1
- developing nations1
- development communication1
- extension services1
- farm families1
- farming systems1
- learning1
- management1
- nutrient management1
- policies1
- research1
- research communication1
- soil conservation1
- soil fertility1
- stakeholders1
- sustainability1