Columbia subject headings:
Harvard subject headings:
Espionage, British--Soviet Union.
Spies--Great Britain--Biography.
Teague-Jones, Reginald, 1889-1988.
Princeton subject headings:
Azerbaijan--History--Revolution, 1917-1921.
Intelligence service--Great Britain--History--20th century.
Soviet Union--History--Revolution, 1917-1921.
Spies--Great Britain--Biography.
Teague-Jones, Reginald, 1889-1988.