Columbia subject headings:
Harvard subject headings:
Cold War.
Espionage, American--History--20th century
Espionage, Soviet--History--20th century.
Espionage, Soviet--History.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti.
United States. Central Intelligence Agency
Princeton subject headings:
Cold War.
Espionage, American--History--20th century.
Espionage, Soviet--History--20th century.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti
United States. Central Intelligence Agency