Columbia subject headings:
Conservatism--Germany--History--19th century.
Germany--Politics and government--1789-1900.
Statesmen--Germany--19th century--Biography.
Harvard subject headings:
Conservatism--Germany--History--19th century--Congresses.
Germany--Politics and government--1789-1900--Congresses
Hassenpflug, Ludwig, 1794-1862--Exhibitions.
Politicians--Germany--Biography--Congresses.
Statesmen--Germany--Biography--Congresses.
Princeton subject headings:
Conservatism--Germany--History--19th century.
Germany--Politics and government--1789-1900.
Statesmen--Germany--19th century--Biography.