Columbia subject headings:
Economic development--Environmental aspects--Congresses.
Environmental policy--International cooperation--Congresses.
Environmental protection--International cooperation--Congresses.
Harvard subject headings:
Economic development--Environmental aspects--Congresses
Environmental policy--International cooperation--Congresses
Environmental protection--International cooperation--Congresses
Princeton subject headings:
Economic development--Environmental aspects--Congresses.
Environmental policy--International cooperation--Congresses.
Environmental protection--International cooperation--Congresses.