Columbia subject headings:
Democratic Unionist Party (Northern Ireland)
Ireland--History--20th century.
Ireland--History--21st century.
Northern Ireland--Politics and government.
Harvard subject headings:
Democratic Unionist Party (Northern Ireland)
Ireland--History--20th century.
Ireland--History--21st century.
Northern Ireland--Politics and government--1968-1998.
Northern Ireland--Politics and government--1998-.
Northern Ireland--Politics and government.
Princeton subject headings: