Columbia subject headings:
Greece--Foreign relations--20th century.
Greece--Foreign relations--Turkey.
Turkey--Foreign relations--Greece.
Harvard subject headings:
Greece--Foreign relations--Turkey--20th century.
Greece--Foreign relations--Turkey--21st century.
International relations--Philosophy
Turkey--Foreign relations--Greece--20th century.
Turkey--Foreign relations--Greece--21st century.
Princeton subject headings:
Greece--Foreign relations--20th century.
Greece--Foreign relations--Turkey.
Turkey--Foreign relations--Greece.