Columbia subject headings:
Germany--Politics and government--1918-1933.
Political violence--Germany--History--20th century.
Social conflict--Germany--History--20th century.
Harvard subject headings:
Germany--Politics and government--1918-1933
Political violence--Germany--History--20th century.
Social conflict--Germany--History--20th century.
Princeton subject headings:
Germany--Politics and government--1918-1933.