Columbia subject headings:
Cities and towns--Europe, Central--History--Congresses.
Europe, Central--Commercial policy--History--Congresses.
Mercantile system--Europe, Central--History--Congresses.
Harvard subject headings:
Cities and towns--Europe, Central--History--Congresses.
Europe, Central--Commercial policy--History--Congresses.
Mercantile system--Europe, Central--History--Congresses.
Princeton subject headings:
Austria--Economic conditions--Congresses.
Cities and towns--Austria--History--Congresses.
Cities and towns--Europe, Central--History--Congresses.
Cities and towns--Germany--History--Congresses.
Germany--Economic conditions--Congresses.