Columbia subject headings:
Greece--History--Civil War, 1944-1949--Refugees--Congresses.
Political refugees--Europe--History--20th century--Congresses.
Political refugees--Greece--History--20th century--Congresses.
Harvard subject headings:
Greece--History--Civil War, 1944-1949--Refugees--Congresses.
Political refugees--Europe, Eastern--History--20th century--Congresses.
Political refugees--Greece--History--20th century--Congresses.
Princeton subject headings:
Greece--History--Civil War, 1944-1949--Refugees--Congresses.
Political refugees--Europe--History--20th century--Congresses.
Political refugees--Greece--History--20th century--Congresses.