Columbia subject headings:
Europe--Politics and government--1789-1900.
Germany--History--1789-1900.
Germany--Politics and government--1789-1900.
Prussia (Germany)--Politics and government--1789-1900.
Harvard subject headings:
Europe--Politics and government--1789-1900.
Germany--History--1789-1900.
Germany--Politics and government--1789-1900.
Prussia (Germany)--Politics and government--1815-1870.
Princeton subject headings:
Europe--Politics and government--1789-1900.
Germany--History--1789-1900.
Germany--Politics and government--1789-1900.
Prussia (Germany)--Politics and government--1789-1900.