Columbia subject headings:
Civilization, Medieval--Congresses.
Europe, Central--Civilization--Congresses.
Mass media and culture--Europe, Central--History--Congresses.
Mass media and culture--Europe--History--Congresses.
Social change--Europe, Central--History--Congresses.
Harvard subject headings:
Civilization, Medieval--Congresses
Europe, Central--Civilization--Congresses.
Mass media and culture--Europe, Central--History--Congresses.
Mass media and culture--Europe--History--Congresses.
Social change--Europe, Central--History--Congresses.
Princeton subject headings:
Civilization, Medieval--Congresses.
Europe, Central--Civilization--Congresses.
Mass media and culture--Europe, Central--History--Congresses.
Mass media and culture--Europe--History--Congresses.
Social change--Europe, Central--History--Congresses.