Columbia subject headings:
Harvard subject headings:
Intelligence officers--Soviet Union--Biography.
Nikolʹskiĭ, Vitaliĭ.
Soviet Union. Glavnoe razvedyvatelʹnoe upravlenie--History.
Spies--Soviet Union--Biography.
Princeton subject headings:
Intelligence officers--Soviet Union--Biography.
Nikolʹskiĭ, Vitaliĭ.
Soviet Union. Glavnoe razvedyvatelʹnoe upravlenie--History.
Spies--Soviet Union--Biography.