Columbia subject headings:
Economic development--Environmental aspects--Congresses.
Environmental law, International.
Environmental policy--Congresses.
Environmental protection--Congresses.
Natural resources--Congresses.
Harvard subject headings:
Economic development--Environmental aspects--Congresses
Environmental policy--Congresses
Environmental protection--International cooperation--Congresses
Natural resources--Congresses
Princeton subject headings:
Agenda 21.
Economic development--Environmental aspects--Congresses.
Environmental policy--Congresses.
Environmental protection--Congresses.
Natural resources--Congresses.