Columbia subject headings:
Great Britain--Politics and government--1964-1979.
Intelligence service--Political aspects--Great Britain--History--20th century.
Secret service--Political aspects--Great Britain--History--20th century.
Wilson, Harold, 1916-1995.
Harvard subject headings:
Great Britain--Politics and government--1964-1979.
Intelligence service--Great Britain--History--20th century.
Intelligence service--Political aspects--Great Britain--History--20th century.
Secret service--Political aspects--Great Britain--History--20th century.
Wilson, Harold, 1916-1995.
Princeton subject headings:
Great Britain--Politics and government--1964-1979.
Intelligence service--Political aspects--Great Britain--History--20th century.
Secret service--Political aspects--Great Britain--History--20th century.
Wilson, Harold, 1916-1995.