Columbia subject headings:
Austria--History--Revolution, 1848-1849--Congresses.
Constance, Lake, Region--History--19th century--Congresses.
Germany--History--Revolution, 1848-1849--Congresses.
Switzerland--History--19th century--Congresses.
Harvard subject headings:
Austria--History--Revolution, 1848-1849.
Constance, Lake of, Region--History--19th century.
Germany--History--Revolution, 1848-1849.
Switzerland--History--19th century.
Princeton subject headings:
Germany--History--Revolution, 1848-1849.