Columbia subject headings:
Espionage, Russian--Personal narratives.
Espionage, Soviet--Personal narratives.
Poland--Relations--Soviet Union--Personal narratives.
Soviet Union--Relations--Poland--Personal narratives.
Harvard subject headings:
Espionage, Russian
Espionage, Soviet.
Federalʹnai︠a︡ sluzhba bezopasnosti Rossii.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti.
Princeton subject headings: