Columbia subject headings:
Slavic philology--Congresses.
Soviet Union--History--Revolution, 1917-1921--Literature and the revolution--Congresses.
Harvard subject headings:
Slavic philology--Congresses.
Soviet Union--History--Revolution, 1917-1921--Literature and the revolution--Congresses.
Princeton subject headings:
Slavic philology--Congresses.
Soviet Union--History--Revolution, 1917-1921--Literature and the revolution--Congresses.