Columbia subject headings:
Brazil--Politics and government--1985-2002--Congresses.
Communism--Brazil--Congresses.
Partido Comunista Brasileiro--Congresses.
Harvard subject headings:
Brazil--Politics and government--1985---Congresses.
Communism--Brazil--Congresses.
Partido Comunista Brasileiro--Congresses.
Princeton subject headings:
Brazil--Politics and government--1985---Congresses.
Communism--Brazil--Congresses.
Partido Comunista Brasileiro--Congresses.