Columbia subject headings:
Berlin (Germany)--History--Revolution, 1848-1849.
Berlin (Germany)--Politics and government.
Berlin (Germany)--Social conditions.
Harvard subject headings:
Berlin (Germany)--History--Revolution, 1848-1849
Berlin (Germany)--Politics and government
Berlin (Germany)--Social conditions
Princeton subject headings:
Berlin (Germany)--History--Revolution, 1848-1849.
Berlin (Germany)--Politics and government.
Berlin (Germany)--Social conditions.