Columbia subject headings:
Civilization, Medieval--Congresses.
Habermas, Jürgen. Strukturwandel der Öffentlichkeit--Congresses.
Public spaces--Europe--History--To 1500--Congresses.
Social history--Medieval, 500-1500--Congresses.
Social structure--Europe--History--To 1500--Congresses.
Harvard subject headings:
Habermas, Jürgen. Strukturwandel der Öffentlichkeit.
Political participation--History--To 1500.
Public spaces--History--To 1500.
Princeton subject headings:
Habermas, Jürgen. Strukturwandel der Öffentlichkeit.
Political participation--History--To 1500.
Public spaces--History--To 1500.