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Subject
- Forests and forestry66
- Forest management31
- Agriculture21
- Forest policy19
- Management19
- Research15
- Wildlife conservation13
- National parks and reserves11
- Economic aspects10
- Conservation of natural resources9
- Forestry policy8
- Indians of North America8
- Land tenure8
- Forest conservation6
- Forest reserves6
- Law and legislation6
- Environmental aspects5
- Fishery management5
- Fishes5
- Forest nurseries5