Columbia subject headings:
Ireland--Politics and government--1922-
Ireland--Social conditions.
Irish unification question.
Ulster (Northern Ireland and Ireland)--Politics and government.
Ulster (Northern Ireland and Ireland)--Social conditions.
Harvard subject headings:
Ireland--Politics and government--1922-
Ireland--Social conditions.
Irish unification question.
Ulster (Northern Ireland and Ireland)--Politics and government.
Ulster (Northern Ireland and Ireland)--Social conditions.
Princeton subject headings:
Ireland--Politics and government--1922-
Ireland--Social conditions.
Irish unification question.
Ulster (Northern Ireland and Ireland)--Politics and government--1922-.
Ulster (Northern Ireland and Ireland)--Social conditions.