Columbia subject headings:
Black people--Brazil--Congresses.
Power (Social sciences)--Congresses.
Social classes--Brazil--Congresses.
Harvard subject headings:
Black people--Brazil--Congresses.
Power (Social sciences)--Congresses
Social classes--Brazil--Congresses.
Princeton subject headings:
Black people--Brazil--Congresses.
Power (Social sciences)--Congresses.
Social classes--Brazil--Congresses.