Columbia subject headings:
Dams--Social aspects--Brazil--Congresses.
Forced migration--Brazil--Congresses.
Labor unions--Brazil--Congresses.
Land settlement--Brazil--Congresses.
Harvard subject headings:
Dams--Environmental aspects--Brazil--Congresses.
Dams--Social aspects--Brazil--Conferences.
Dams--Social aspects--Brazil--Congresses.
Forced migration--Brazil--Congresses.
Land settlement--Brazil--Congresses.
Princeton subject headings: