Columbia subject headings:
Germany (East)--Politics and government.
Germany (East). Ministerium für Staatssicherheit.
Intelligence service--Germany (East)
Secret service--Germany (East)
Harvard subject headings:
Germany (East)--Politics and government.
Germany (East). Ministerium für Staatssicherheit.
Intelligence service--Germany (East)
Secret service--Germany (East)
Princeton subject headings:
Espionage, East German--History.
Germany (East). Ministerium für Staatssicherheit. Hauptverwaltung Aufklärung--History.
Intelligence service--Germany (East)--History.
Secret service--Germany (East)--History.