Columbia subject headings:
Intelligence service--United States.
National security--United States.
United States. Central Intelligence Agency.
World politics--1945-1989.
Harvard subject headings:
Intelligence service--United States.
National security--United States
United States. Central Intelligence Agency
World politics--1945-
World politics--1945-1989
Princeton subject headings:
Intelligence service--United States.
National security--United States.
United States. Central Intelligence Agency
World politics--1945-1989.