Columbia subject headings:
Environmental policy--Developing countries--Congresses.
Environmental protection--Economic aspects--Developing countries--Congresses.
Pollution--Economic aspects--Developing countries--Congresses.
Harvard subject headings:
Princeton subject headings:
Environmental policy--Developing countries--Congresses.
Environmental policy--Economic aspects--Developing countries.
Environmental protection--Economic aspects--Developing countries--Congresses.
Pollution--Economic aspects--Developing countries--Congresses.