Columbia subject headings:
Civilization, Slavic--Congresses.
Slavic antiquities--Congresses.
Slavs--History--Congresses.
Harvard subject headings:
Civilization, Slavic--Congresses.
Slavic antiquities--Congresses.
Slavs--Antiquities--Congresses.
Slavs--History--Congresses.
Princeton subject headings:
Civilization, Slavic--Congresses.
Slavic antiquities--Congresses.
Slavs--History--Congresses.