Columbia subject headings:
Portugal--Politics and government--1861-1889.
Portugal--Politics and government--1889-1908.
Portugal--Politics and government--1910-1926.
Republicanism--Portugal--History.
Harvard subject headings:
Portugal--Politics and government--1861-1889.
Portugal--Politics and government--1889-1908.
Portugal--Politics and government--1910-1926.
Republicanism--Portugal--History--20th century.
Republicanism--Portugal--History.
Princeton subject headings:
Portugal--Politics and government--19th century.
Portugal--Politics and government--20th century.
Republicanism--Portugal--History.