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Topic
- Wildlife refuges 3
- Dams 1
- Ducks 1
- Lectures and lecturing 1
- Rivers--California 1
- Wildlife management 1
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- Klamath River >> Klamath County >> Oregon >> United States 3
- Clear Lake National Wildlife Refuge >> Modoc County >> California >> United States 1
- Lake Ewauna >> Klamath County >> Oregon >> United States 1
- Lower Klamath National Wildlife Refuge >> Siskiyou County >> California >> United States 1
- Malheur National Wildlife Refuge >> Harney County >> Oregon >> United States 1
- University of California, Berkeley >> Alameda County >> California >> United States 1