Columbia subject headings:
Harvard subject headings:
Bonn (Germany)--Commerce.
Bonn (Germany)--Economic conditions.
Fairs--Germany--Bonn--History.
Pützchens Markt--History--Sources.
Pützchens Markt--History.
Princeton subject headings:
Bonn (Germany)--Commerce.
Bonn (Germany)--Economic conditions.
Fairs--Germany--Bonn--History.
Pützchens Markt--History--Sources.
Pützchens Markt--History.