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Subject
- Hydroelectric power plants.[remove]7
- Construction.2
- Niagara Falls (N.Y.)--Description and travel.2
- Water-power.2
- California State Water Project.1
- Central Valley Project (Calif.)1
- Dams--California.1
- Electric utilities.1
- Electrical engineering.1
- Hydraulic structures--California.1
- Hydroelectric generators.1
- Legislation--New York (State)--New York.1
- Paddle-wheels.1
- Subways--Fares--New York (State)--New York.1
- Transportation--New York (State)--New York.1
- Water-wheels.1
- Water.1
- Wilson Dam.1