Columbia subject headings:
Greece--Foreign relations--1917-1935.
Greece--Foreign relations--1935-1967.
Greece--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--Greece.
Harvard subject headings:
Greece--Foreign relations--1917-1935.
Greece--Foreign relations--1935-1967.
Greece--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--Greece.
Princeton subject headings:
Greece--Foreign relations--1917-1935.
Greece--Foreign relations--1935-1967.
Greece--Foreign relations--Soviet Union.
Soviet Union--Foreign relations--1917-1945.
Soviet Union--Foreign relations--Greece.