Columbia subject headings:
Germany--Politics and government--1789-1900.
Germany--Politics and government--20th century.
Liberalism--Germany--History--19th century.
Liberalism--Germany--History--20th century.
Harvard subject headings:
Princeton subject headings:
Germany xPolitics and government y19th century.
Germany xPolitics and government y20th century.
Liberalism--Germany--History--19th century.
Liberalism--Germany--History--20th century.