Columbia subject headings:
Harvard subject headings:
Greece--Foreign relations--Yugoslavia--Sources.
Macedonian question--Sources.
Yugoslavia--Foreign relations--Greece--Sources.
Princeton subject headings:
Greece--Foreign relations--1935-1967--Sources.
Greece--Foreign relations--Yugoslavia--Sources.
Macedonian question--Sources.
Yugoslavia--Foreign relations--1945-1980 Greece--Sources.
Yugoslavia--Foreign relations--Greece--Sources.