Columbia subject headings:
Belgium--Politics and government--1830-1914.
Belgium--Politics and government--1914-
Democracy--Belgium--History.
Harvard subject headings:
Belgium--Politics and government--1830-1914.
Belgium--Politics and government--1914-
Democracy--Belgium--History.
Princeton subject headings:
Belgium--Politics and government--1830-1914.
Belgium--Politics and government--1914-
Democracy--Belgium--History.