Columbia subject headings:
Harvard subject headings:
Brazil--Politics and government--1964-1985--Periodicals.
Brazil--Politics and government--1985---Periodicals.
Labor--Brazil--Political activity--Periodicals.
Partido do Movimento Democrático Brasileiro--Periodicals.
Partido dos Trabalhadores (Brazil)--Periodicals.
Political participation--Brazil--Periodicals.
Working class--Brazil--Political activity--Periodicals.
Princeton subject headings:
Brazil--Periodicals.
Periodicals.