Columbia subject headings:
Harvard subject headings:
Communism--Germany--History
Communist parties--Germany--History.
Germany (East)--Politics and government.
Right and left (Political science)--Germany--History.
Socialism--Germany--History
Socialist parties--Germany--History.
Princeton subject headings:
Communism--Germany (East)--History.
Germany (East)--Politics and government.
Political parties--Germany (East)
Right and left (Political science)--Germany (East)--History.