Columbia subject headings:
European Economic Community--Greece--History--Sources.
European Union--Greece--History--Sources.
Historiko Archeio tou Hypourgeiou Exōterikōn (Greece)
Harvard subject headings:
European Economic Community--Greece--History--Sources.
European Union--Greece--History--Sources.
Historiko Archeio tou Hypourgeiou Exōterikōn (Greece)
Princeton subject headings:
European Union--Greece--History--Sources.