Columbia subject headings:
Espionage, Soviet.
Intelligence officers--Soviet Union--Biography.
Kalugin, Oleg, 1934-
Secret service--Soviet Union.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti--Officials and employees--Biography.
Spies--Soviet Union--Biography.
Harvard subject headings:
Espionage, Soviet.
Intelligence officers--Soviet Union--Biography.
Kalugin, Oleg, 1934-
Secret service--Soviet Union
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti--Officials and employees--Biography.
Spies--Soviet Union--Biography.
Princeton subject headings:
Espionage, Soviet.
Intelligence officers--Soviet Union--Biography.
Kalugin, Oleg, 1934-
Secret service--Soviet Union.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti--Officials and employees--Biography.
Spies--Soviet Union--Biography.