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Creator
- United States. Bonneville Power Administration 27
- United States. Department of the Interior 26
- B.C. Hydro 1
Topic
- Water-power 27
- Northwest, Pacific 22
- Public utilities 11
- Dams 4
- Industrialization 4
- Agriculture 3
- Hydroelectric power plants 3
- Irrigation 2
- Locks (Hydraulic engineering) 2
- Maps 2
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Rights
- No Copyright - United States 27
Type
- Text 26
- Collection 1