Columbia subject headings:
Brazil--Politics and government--1985-2002--Periodicals.
Labor movement--Brazil--Periodicals.
Syndicalism--Brazil--Periodicals.
Working class--Political activity--Brazil--Periodicals.
Harvard subject headings:
Syndicalism--Brazil--Periodicals.
Working class--Brazil--Periodicals.
Princeton subject headings:
Labor movement--Brazil--Periodicals.
Periodicals.
Syndicalism--Brazil--Periodicals.