Columbia subject headings:
Germany--Politics and government--1871-1918.
Germany--Politics and government--1918-1933.
Labor movement--Germany--History--20th century.
Socialism--Germany--20th century.
Socialist parties--Germany--History--20th century.
Harvard subject headings:
Germany--Politics and government--1871-1918.
Germany--Politics and government--1918-1933
Labor movement--Germany--History--20th century
Socialism--Germany--20th century.
Socialist parties--Germany--History--20th century.
Princeton subject headings:
Germany--Politics and government--1871-1918.
Germany--Politics and government--1918-1933.
Labor movement--Germany--History--20th century.
Socialism--Germany--20th century.
Socialist parties--Germany--History--20th century.