Columbia subject headings:
Brazil--Politics and government--1930-1945--Sources.
Brazil--Politics and government--1954-1964--Sources.
Harvard subject headings:
Brazil--Politics and government--1945-1954--Sources.
Brazil--Politics and government--1954-1964--Sources.
Princeton subject headings:
Brazil--Politics and government--1945-1954.
Brazil--Politics and government--1955-.
Vargas, Getúlio, 1883-1954.