Columbia subject headings:
Harvard subject headings:
Air--Pollution--Government policy--United States
Climatic changes--Government policy--United States
Environmental policy--International cooperation
Greenhouse gases--Government policy--United States.
United Nations Framework Convention on Climate Change Protocols, etc.
Princeton subject headings:
Air--Pollution--Government policy--United States.
Climatic changes.
Greenhouse gases--Government policy--United States.
United Nations Framework Convention on Climate Change Protocols, etc.,