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Subject
- Agriculture33
- Forests and forestry17
- Forest management15
- Deforestation10
- History10
- Sustainable forestry10
- Economic aspects9
- Forest conservation8
- Environmental aspects7
- Fisheries7
- Agricultural ecology6
- Conservation of natural resources6
- Research6
- Rural development6
- Sustainable agriculture6
- Control5
- Corn5
- Indians5
- Management5
- Rain forest conservation5