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- industrialization[remove]3
- agricultural development2
- development issues2
- farming methods2
- information issues2
- sustainability2
- traditional knowledge2
- USA (United States of America; North America)1
- agrarianism1
- concentration1
- conflict1
- conservation1
- development1
- educators1
- environmental quality1
- farmers1
- field days1
- group teaching1
- historical research1
- indigenous knowledge1