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Subject Term
- Iowa, USA[remove]14
- extension agents3
- farm journals3
- history3
- training needs3
- Four H2
- delivery systems2
- extension education2
- extension programs2
- information dissemination2
- information needs2
- perceptions2
- sustainability2
- youth2
- adoption1
- adoption behavior1
- adoption process1
- agriculture1
- awareness of innovations1
- biotechnology1