Columbia subject headings:
Espionage, Soviet.
Shvets, Yuri B.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti.
Spies--Soviet Union--Biography.
Harvard subject headings:
Espionage, Soviet--United States.
Espionage, Soviet.
Shvets, Yuri B.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti.
Spies--Soviet Union--Biography.
Princeton subject headings:
Espionage, Soviet.
Shvets, Yuri B.
Soviet Union. Komitet gosudarstvennoĭ bezopasnosti
Spies--Soviet Union--Biography.