Columbia subject headings:
Harvard subject headings:
Germany--Politics and government.
Left-wing extremists--Germany.
Nationalism--Germany--History.
Radicalism--Germany
Radicalism--Germany--History.
Right-wing extremists--Germany
Princeton subject headings:
Germany--Politics and government.
Left-wing extremists--Germany.
Nationalism--Germany--History.
Radicalism--Germany--History.
Radicalism--Germany.
Right-wing extremists--Germany.