Columbia subject headings:
Great Britain--Relations--Northern Ireland.
Great Britain. Treaties, etc. 1998 April 10.
Northern Ireland--Politics and government--1998-
Northern Ireland--Relations--Great Britain.
Harvard subject headings:
Great Britain. Treaties, etc. 1998 April 10.
Northern Ireland--Politics and government--1998-.
Princeton subject headings:
Belfast Agreement (1998)
Northern Ireland--Politics and government--1998-