Columbia subject headings:
Schroeder, Hildegard.
Slavic philology.
Harvard subject headings:
Europe, Eastern--History.
Russia--Civilization--Congresses.
Schroeder, Hildegard.
Slavic languages--Congresses.
Slavic literature--Congresses.
Princeton subject headings:
Schroeder, Hildegard.
Slavic philology.