Columbia subject headings:
Germany--History--1740-1806--Congresses.
Germany--History--1806-1815--Congresses.
Harvard subject headings:
Germany--History--1740-1806--Congresses.
Germany--History--1806-1815--Congresses.
Princeton subject headings:
Germany--History--1740-1806--Congresses.
Germany--History--1806-1815--Congresses.