Topics
Social aspects
Hydroelectric power plants
28
Dams
22
Economic aspects
21
Social conditions
10
Economic conditions
9
Research
9
Recreational use
6
Construction projects
5
Economics
5
Recreational surveys
5
Archaeological significance
4
Forecasting
4
Human services
4
Public goods
4
River surveys
4
Rivers
4
Sociological aspects
4
Economic forecasting
3
Methodology
3
Population forecasting
3
Power utilization
3
Transportation
3
Aesthetic resources
2
Air quality
2
Air travel
2
Antiquities
2
Archaeological surveying
2
Archaeology
2
Cultural property
2
Economic history
2
Evaluation
2
Historic sites
2
Indians of North America
2
Outdoor recreation
2
Planning
2
Public opinion
2
Regional economics
2
Wilderness areas
2
Access roads
1
Business enterprises
1
Economic surveys
1
Environmental aspects
1
Household surveys
1
Households
1
Housing forecasting
1
Land use
1
Mathematical models
1
Natural resources
1
Natural resources surveys
1
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