Topics
Economic aspects
6
Hydroelectric power plants
6
Dams
4
Economic conditions
3
Appropriations and expenditures
2
Economic history
2
Electric power
2
Electric power consumption
2
Forecasting
2
Prices
2
Regional economics
2
Social aspects
2
Social conditions
2
Access roads
1
Design and construction
1
Estimates
1
Expenditures, Public
1
Finance
1
Highway planning
1
Mathematical models
1
Planning
1
Roads
1
Route surveying
1
Transportation
1