Topics
Highway planning
Access roads
12
Dams
12
Planning
11
Transportation
10
Environmental aspects
7
Hydroelectric power plants
7
Roads
5
Railroad tracks
4
Design and construction
3
Bridges
2
Effect of dams on
2
Fishes
2
Freshwater habitats
2
Overhead electric lines
2
Route surveying
2
Economic aspects
1
Environmental impact statements
1
Public opinion
1
Scheduling
1