Columbia subject headings:
Greece--Politics and government--1935-1967--Congresses.
Right and left (Political science)--Greece--History--20th century--Congresses.
Harvard subject headings:
Greece--History--1917-1944--Congresses.
Greece--History--1950-1967--Congresses.
Greece--History--Civil War, 1944-1949--Congresses.
Greece--Politics and government--1935-1967--Congresses.
Kommounistikon Komma tēs Hellados--Congresses.
Right and left (Political science)--Greece--Congresses.
Right and left (Political science)--Greece--History--20th century--Congresses.
Princeton subject headings:
Greece--Politics and government--1935-1967--Congresses.
Right and left (Political science)--Greece--History--20th century--Congresses.