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- extension[remove]4
- rural development3
- agricultural development2
- Africa1
- Brazil (Latin America; South America)1
- Green Revolution1
- India (Southern Asia)1
- Nigeria1
- Nigeria (Africa, Western)1
- Rwanda (Africa, Eastern)1
- Tanzania1
- change1
- communication methods1
- communication planning1
- conflict1
- corn1
- developing nations1
- development1
- development communication1
- development issues1