Columbia subject headings:
Harvard subject headings:
Brazil--History--1964-1985.
Brazil--Politics and government--1964-1985.
Dictatorship--Brazil--History.
Espionage--Brazil.
Moles (Spies)--Brazil.
Political crimes and offenses--Brazil
Princeton subject headings:
Brazil--History--1964-1985.
Dictatorship--Brazil--History--20th century.
Political persecution--Brazil--History--20th century.
Spies--Brazil--History--20th century.