Columbia subject headings:
Associations, institutions, etc.--Germany (East)--History.
Dissenters--Germany (East)--History.
Opposition (Political science)--Germany (East)--History.
Harvard subject headings:
Associations, institutions, etc.--Germany (East)--History--20th century.
Associations, institutions, etc.--Germany (East)--History.
Dissenters--Germany (East)--History--20th century.
Dissenters--Germany (East)--History.
Germany (East)--Politics and government.
Opposition (Political science)--Germany (East)--History--20th century.
Opposition (Political science)--Germany (East)--History.
Princeton subject headings:
Associations, institutions, etc.--Germany (East)--History.
Dissenters--Germany (East)--History.
Opposition (Political science)--Germany (East)--History.