Columbia subject headings:
Harvard subject headings:
Balkan Peninsula--Foreign relations--Greece.
Communist countries--Foreign relations--Greece.
Communist countries--Relations--Greece.
Greece--Foreign economic relations--Balkan Peninsula.
Greece--Foreign relations--1967-1974.
Greece--Politics and government--1967-1974.
Greece--Relations--Communist countries.
Princeton subject headings:
Communist countries--Relations--Greece.
Greece--Relations--Communist countries.