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Subject
- Outdoor recreation10
- Forest reserves4
- Recreation areas4
- Motor vehicles3
- National parks and reserves3
- Forest management2
- Forests and forestry2
- Land use2
- Oil and gas leases2
- Wilderness areas2
- Conservation of natural resources1
- Environmental aspects1
- Grassland ecology1
- Grasslands1
- Habitat (Ecology)1
- Research natural areas1
- Ski resorts1
- Trails1
- Winter sports1
