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Topic
- Wildlife refuges 9
- Birds--Conservation 6
- Agriculture 4
- Lakes--California 3
- Lakes--Oregon 3
- Herons 2
- Hunting 2
- United States. Bureau of Biological Survey 2
- Wildlife management 2
- Advisory Committee on Rural Land Zoning 1
- Burning of land 1
- California Oregon Power Company 1
- Douglas County Planning Commission (Or.) 1
- Feathers 1
- Fishes--Conservation 1
- Forest fires 1
- Forestry law and legislation 1
- Forests and forestry 1
- Land use, Rural 1
- Land use, Urban 1
