Columbia subject headings:
Kings and rulers in literature--Congresses.
Slavic literature--History and criticism--Congresses.
Harvard subject headings:
Aristocracy (Political science) in literature--Congresses.
Emperors in literature--Congresses.
Politics and literature--Congresses.
Slavic literature--History and criticism--Congresses.
Princeton subject headings:
Aristocracy (Political science) in literature--Congresses.
Emperors in literature--Congresses.
Politics and literature--Congresses.
Slavic literature--History and criticism--Congresses.