Columbia subject headings:
Ethics--Slavic countries--History--Congresses.
Good and evil in literature--Congresses.
Good and evil--Congresses.
Slavic countries--Civilization--Congresses.
Slavic literature--History and criticism--Congresses.
Harvard subject headings:
Ethics--Slavic countries--History--Congresses.
Good and evil in literature--Congresses.
Good and evil--Congresses
Slavic countries--Civilization--Congresses.
Slavic literature--History and criticism--Congresses.
Princeton subject headings:
Civilization, Slavic--Congresses.
Good and evil--Congresses.