Columbia subject headings:
Northern Ireland--History--1968-1998--Dictionaries.
Northern Ireland--Politics and government--Handbooks, manuals, etc.
Harvard subject headings:
Northern Ireland--History--1969-1994--Dictionaries.
Northern Ireland--Politics and government--1969-1994--Handbooks, manuals, etc.
Princeton subject headings:
Northern Ireland--History--1969-1994--Dictionaries.
Northern Ireland--Politics and government--Handbooks, manuals, etc.