Columbia subject headings:
Espionage, East German--Germany (West)
Germany (East)--Relations--Germany (West)
Germany (East). Ministerium für Staatssicherheit.
Germany (West)--Relations--Germany (East)
Intelligence service--Germany (East)
Kurras, Karl-Heinz.
Harvard subject headings:
Espionage, East German--Germany (West)--History.
Germany (East)--Politics and government.
Germany (East). Ministerium für Staatssicherheit--History.
Kurras, Karl-Heinz, 1927-
Secret service--Germany (East)--History
Spies--Germany (East)--History.
Subversive activities--Germany (West)--History.
Princeton subject headings:
Espionage, East German--Germany (West).
Germany (East)--Relations--Germany (West)
Germany (East). Ministerium für Staatssicherheit
Germany (West)--Relations--Germany (East)
Intelligence service--Germany (East)
Kurras, Karl-Heinz.