Columbia subject headings:
Northern Ireland--History--1968-1998.
Northern Ireland--History--1998-
Northern Ireland--Politics and government--1968-1998.
Northern Ireland--Politics and government--1998-
Harvard subject headings:
Northern Ireland--History--1968-1998.
Northern Ireland--History--1998-.
Northern Ireland--Politics and government--1968-1998.
Northern Ireland--Politics and government--1998-.
Peace movements--Northern Ireland--History--20th century
Princeton subject headings:
Northern Ireland--History--1968-1998.
Northern Ireland--History--1998-
Northern Ireland--Politics and government--1968-1998.
Northern Ireland--Politics and government--1998-