Columbia subject headings:
Brazil--Politics and government--20th century.
Political parties--Brazil--History--20th century.
Politics, Practical--Brazil--History--20th century.
Harvard subject headings:
Brazil--Politics and government--20th century.
Democracy--Brazil--History--20th century.
Political parties--Brazil--History--20th century.
Princeton subject headings:
Brazil--Politics and government--20th century.
Political parties--Brazil--History--20th century.
Politics, Practical--Brazil--History--20th century.