Columbia subject headings:
Albert II, King of the Belgians, 1934-
Belgium--Politics and government--21st century.
Monarchy--Belgium--History--21st century.
Philippe, King of the Belgians, 1960-
Harvard subject headings:
Albert II, King of the Belgians, 1934-
Belgium--Politics and government--21st century.
Monarchy--Belgium--History--21st century.
Monarchy--Belgium--History.
Philippe, King of the Belgians, 1960-
Philippe, King of the Belgians, 1960-.
Princeton subject headings:
Albert II, King of the Belgians, 1934-
Belgium--Politics and government--21st century.
Monarchy--Belgium--History.
Philippe, King of the Belgians, 1960-