Columbia subject headings:
Harvard subject headings:
Germany--Historiography--Congresses.
Germany--History--1789-1900--Congresses.
Germany--History--20th century--Congresses.
Legislative bodies--Reform
Princeton subject headings:
Germany--History--1789-1900.
Germany--History--20th century.
Germany--History--Revolution, 1848-1849.
Legislative bodies--Reform.