Columbia subject headings:
Harvard subject headings:
Franconia (Germany)--History--Congresses.
Franconia (Germany)--Social conditions--Congresses.
Swabia (Germany)--History--Congresses.
Swabia (Germany)--Social conditions--Congresses.
Princeton subject headings:
Franconia (Germany)--History--Congresses.
Franconia (Germany)--Social conditions--Congresses.
Swabia (Germany)--History--Congresses.
Swabia (Germany)--Social conditions--Congresses.