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