Columbia subject headings:
Espionage, Soviet--United States.
Intelligence service--United States.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti.
United States. Central Intelligence Agency.
United States. Federal Bureau of Investigation.
Harvard subject headings:
Espionage, Soviet--United States.
Intelligence service--United States.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti.
United States. Central Intelligence Agency
United States. Federal Bureau of Investigation
Princeton subject headings:
Espionage, Soviet--United States.
Intelligence service--United States.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti
United States. Central Intelligence Agency
United States. Federal Bureau of Investigation