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- Mexico (Latin America; Central America)1
- Veracruz1
- agricultural development1
- attitudes1
- coffee1
- design1
- development1
- development communication1
- extension1
- extension communication1
- farmers1
- information dissemination1
- information needs1
- mass media1
- media effectiveness1
- radio[remove]1
- radio programs1
- rural broadcasts1
- rural development1
- social factors1