Columbia subject headings:
Espionage, Soviet--History.
Intelligence officers--Soviet Union--Biography.
Leonov, N. S. (Nikolaĭ Sergeevich), 1928-
Soviet Union--Politics and government--1945-1991.
Spies--Soviet Union--Biography.
Harvard subject headings:
Afghanistan--Foreign relations--Soviet Union.
Intelligence officers--Soviet Union--Biography.
Leonov, Nikolaĭ Sergeevich.
Soviet Union--Foreign relations--Afghanistan.
Soviet Union--History--1953-1985.
Soviet Union--History--1985-1991.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti.
Spies--Soviet Union--Biography.
Princeton subject headings:
Espionage, Soviet--History.
Intelligence officers--Soviet Union--Biography.
Leonov, Nikolaĭ Sergeevich.
Soviet Union--Politics and government--1945-1991.
Spies--Soviet Union--Biography.