Columbia subject headings:
Ireland--Politics and government--1949---Congresses.
Ireland--Social conditions--Congresses.
Northern Ireland--Politics and government--1968-1998--Congresses.
Northern Ireland--Social conditions--Congresses.
Power (Social sciences)--Congresses.
Harvard subject headings:
Ireland--Politics and government--1949---Congresses.
Ireland--Social conditions--Congresses.
Northern Ireland--Politics and government--1969-1994--Congresses.
Northern Ireland--Social conditions--Congresses.
Power (Social sciences)--Congresses
Princeton subject headings:
Ireland--Politics and government.
Ireland--Social conditions.