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- circulars[remove]2
- extension2
- extension communication[remove]2
- media effectiveness2
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- adoption1
- adoption process1
- audience analysis1
- bulletins1
- diffusion1
- diffusion process1
- educational methods1
- evaluation1
- extension methods1
- farming methods1
- finance1
- history1
- homemaker education1
- leaflets1
- letters1