Columbia subject headings:
Harvard subject headings:
Espionage, West German--Germany (East)
Germany (East). Ministerium für Staatssicherheit.
Intelligence service--Germany (East)--History.
Secret service--Germany (East)--History
Spies--Germany (East)--Biography.
Stiller, Werner, 1947 or 1948-2016.
Princeton subject headings:
Investment bankers--Biography.
Spies--Germany (East)--Biography.
Spies--Germany (West)--Biography.
Stiller, Werner, 1947 or 1948-2016.