Columbia subject headings:
Brazil--Politics and government--1954-1964.
Corrêa, Hercules, 1929-
Corrêa, Hercules, 1929---Interviews.
Partido Comunista do Brasil.
Working class--Political activity--Brazil.
Harvard subject headings:
Brazil--Politics and government--1954-
Communism--Brazil
Labor--Brazil--Political activity.
Working class--Political activity--Brazil
Princeton subject headings:
Brazil--Politics and government--1954-.
Communism--Brazil.
Working class--Political activity--Brazil.