Columbia subject headings:
Thessalonikē (Greece)--Civilization--20th century--Congresses.
Thessalonikē (Greece)--History--20th century--Congresses.
Thessalonikē (Greece)--Intellectual life--20th century--Congresses.
Harvard subject headings:
Thessalonikē (Greece)--History--Congresses.
Princeton subject headings:
Thessalonikē (Greece)--Civilization--Congresses.
Thessalonikē (Greece)--History--Congresses.
Thessalonikē (Greece)--Intellectual life--Congresses.