Columbia subject headings:
Harvard subject headings:
Brazil, Northeast--History.
Brazil--History--Revolution, 1964.
Machado, Jório.
Political persecution--Brazil--History--20th century.
Political prisoners--Brazil--Biography
Princeton subject headings:
Brazil--Politics and government--1964-1985.
Machado, Jório.
Political prisoners--Brazil--Paraíba (State).
Torture--Brazil--Paraíba (State).