Columbia subject headings:
Germans--Brazil--History--20th century.
Nazis--Brazil.
Political persecution--Brazil--History--20th century.
Harvard subject headings:
Brazil--Politics and government--1930-1945.
Espionage, German--Brazil--History.
Germans--Brazil--Political activity.
Intelligence service--Brazil--History.
National socialism--Brazil--History--20th century.
Political persecution--Brazil--History.
Princeton subject headings:
Brazil--Politics and government--1930-1945.
Espionage, German--Brazil--History.
Germans--Brazil--Political activity.
Intelligence service--Brazil--History.
National socialism--Brazil--History--20th century.
Political persecution--Brazil--History.