Columbia subject headings:
Harvard subject headings:
Austria--History--1789-1815--Congresses.
Austria--History--1815-1848--Congresses.
John, Archduke of Austria, 1782-1859--Congresses.
Princes--Austria--Biography--Congresses.
Princeton subject headings:
Austria--History--1789-1815--Congresses.
Austria--History--1815-1848--Congresses.
John, Archduke of Austria, 1782-1859--Congresses.
Princes--Austria--Biography--Congresses.