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- information technology3
- media effectiveness3
- roles[remove]3
- education methods2
- extension communication2
- teaching methods2
- video2
- CD-ROM1
- adoption1
- appropriate technology1
- audiovisual media1
- communication methods1
- communication research1
- computers1
- coverage1
- developing countries1
- development communication1
- development issues1
- distribution1
- educational video1