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Subject Term
- educational media[remove]371
- media effectiveness106
- extension communication100
- teaching methods100
- educational methods81
- extension80
- development communication72
- rural development67
- development66
- distance education47
- education effects43
- radio43
- visual communication43
- audiovisual media41
- teaching aids38
- video36
- education programs32
- extension methods32
- farmers31
- television30