Columbia subject headings:
Brazil--Politics and government--1964-1985.
Labor movement--Brazil.
Labor unions--Political activity--Brazil.
Harvard subject headings:
Brazil--Politics and government--1964-1985.
Labor movement--Brazil
Labor unions--Brazil--Political activity.
Labor unions--Political activity--Brazil.
Working class--Political activity--Brazil
Princeton subject headings:
Brazil--Politics and government--1964-1985.
Labor movement--Brazil--History--20th century.
Labor unions--Brazil--History--20th century.
Socialism--Brazil--History.