Columbia subject headings:
Biographies.
Espionage--Great Britain--History--20th century.
Intelligence service--Soviet Union.
Lonsdale, Gordon, 1922-1970.
Spies--Soviet Union.
Harvard subject headings:
Princeton subject headings:
Espionage--Great Britain--History--20th century.
Intelligence service--Soviet Union.
Lonsdale, Gordon, 1922-1970.
Spies--Soviet Union.