Columbia subject headings:
Harvard subject headings:
Energy policy--Environmental aspects--Developing countries--Congresses.
Environmental policy--Developing countries--Congresses
Sustainable development--Congresses
Sustainable development--Environmental aspects--Congresses.
Princeton subject headings:
Energy policy--Environmental aspects--Developing countries--Congresses.
Environmental policy--Developing countries--Congresses.
Sustainable development--Environmental aspects--Congresses.