Columbia subject headings:
Harvard subject headings:
Cars, Hans Christian, 1939-
Cars, Isolde, 1941---Relations with men.
Cold War
Espionage, German
Spies--Germany--Biography
Princeton subject headings:
Cars, Hans Christian, 1939-
Cars, Isolde, 1941---Relations with men.
Cold War.
Espionage, German.
Spies--Germany--Biography.