Columbia subject headings:
Harvard subject headings:
Germany (East)--History.
Germany (East)--Politics and government.
Germany (East). Ministerium für Staatssicherheit--History.
Internal security--Germany--Berlin--History.
Internal security--Germany--Berlin.
Political persecution--Germany (East)
Political persecution--Germany (East)--History.
Princeton subject headings:
Germany (East)--History.
Germany (East). Ministerium für Staatssicherheit--History.
Internal security--Germany--Berlin.
Political persecution--Germany (East)