Columbia subject headings:
Ballet--Soviet Union.
Lavrovskiĭ, Leonid Mikhaĭlovich, 1905-1967.
Harvard subject headings:
Ballet--Study and teaching--Soviet Union.
Choreographers--Soviet Union--Biography.
Lavrovskiĭ, Leonid Mikhaĭlovich, 1905-1967
Lavrovskiĭ, Leonid Mikhaĭlovich, 1905-
Princeton subject headings: