Columbia subject headings:
Amazon River Region--Economic conditions.
Ecology--Amazon River Region.
Economic development--Environmental aspects--Amazon River Region.
Environmental policy--Amazon River Region.
French--Amazon River Region.
Harvard subject headings:
Amazon River Region--Economic conditions--Congresses.
Environmental policy--Amazon River Region--Congresses
Human ecology--Amazon River Region--Congresses.
Princeton subject headings:
Amazon River Region--Economic conditions--Congresses.
Environmental policy--Amazon River Region--Congresses.
Human ecology--Amazon River Region--Congresses.