Subject
Environmental policy
2
Environmental protection
2
Global warming
2
Global warming Government policy
2
Greenhouse effect, Atmospheric
2
Greenhouse effect, Atmospheric Government policy
2
Human ecology
2
Dam retirement
1
Dams Environmental aspects
1
Environmental policy History
1
Environmentalism
1
Fishes Effect of dams on
1
Fishways
1
Hilbert's tenth problem
1
Hydroelectric power plant retirement
1
Hydroelectric power plants Environmental aspects
1
Mathematicians
1
Mathematics History
1
Pacific salmon Effect of dams on
1
Risk perception
1
Rivers
1
Salmon stock management
1
Stream conservation
1
Stream restoration
1
Water resources development Government policy History
1
Women
1
Women mathematicians
1