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Subject Term
- educational media[remove]363
- media effectiveness104
- extension communication100
- teaching methods99
- educational methods81
- extension80
- development communication71
- development66
- rural development66
- distance education47
- visual communication43
- education effects42
- radio42
- audiovisual media40
- teaching aids37
- video35
- extension methods32
- farmers31
- television30
- education programs29