Columbia subject headings:
Tolstoy, Leo, graf, 1828-1910--Dramatic production--Congresses.
Tolstoy, Leo, graf, 1828-1910--Stage history--Congresses.
Harvard subject headings:
Princeton subject headings:
Tolstoy, Leo, graf, 1828-1910--Criticism and interpretation--Congresses.
Tolstoy, Leo, graf, 1828-1910--Dramatic works--Congresses.