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Subject Term
- development[remove]3
- agricultural development2
- development communication2
- rural development2
- Rogers, Everett M.1
- Zimbabwe1
- adoption process1
- careers1
- communication research1
- communicator effectiveness1
- coverage1
- developing countries1
- development issues1
- diffusion1
- educators1
- extension1
- extension services1
- extension systems1
- farmer field schools1
- farmers1