Columbia subject headings:
Harvard subject headings:
Brandt, Willy, 1913-1992.
Espionage, East German--History.
Espionage, German--History.
Germany (East)--Politics and government--Sources.
Germany (East). Ministerium für Staatssicherheit.
Germany (West)--Politics and government--Sources.
Intelligence service--Germany--History.
Princeton subject headings:
Brandt, Willy, 1913-1992.
Germany (East). Ministerium für Staatssicherheit