Columbia subject headings:
Espionage, Soviet--France--History--20th century.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti.
Harvard subject headings:
Espionage, Soviet--France--History--20th century.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti.
Princeton subject headings:
Espionage, Soviet--France--History--20th century.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti