Columbia subject headings:
Africa--Population--Economic aspects--Congresses.
Africa--Population--Environmental aspects--Congresses.
Economic development--Environmental aspects--Africa--Congresses.
Environmental policy--Africa--Congresses.
Sustainable development--Africa--Congresses.
Harvard subject headings:
Princeton subject headings:
Africa--Population--Economic aspects--Congresses.
Africa--Population--Environmental aspects--Congresses.
Economic development--Environmental aspects--Africa--Congresses.
Environmental policy--Africa--Congresses.
Sustainable development--Africa--Congresses.