Columbia subject headings:
Prussia (Germany)--Economic conditions.
Prussia (Germany)--Politics and government--1815-1870.
Silesia--Economic conditions.
Silesia--Politics and government.
Harvard subject headings:
Prussia (Germany)--Economic conditions.
Prussia (Germany)--Politics and government--1815-1870.
Silesia--Economic conditions.
Silesia--Politics and government.
Princeton subject headings:
Germany--History--Revolution, 1848-1849.