Columbia subject headings:
Harvard subject headings:
Musicians--Biography
Opera
Ozerov, N. N. (Nikolaĭ Nikolaevich), 1887-1953.
Princeton subject headings:
Musicians--Russia--Biography.
Musicians--Soviet Union--Biography.
Opera.
Ozerov, N. N. (Nikolaĭ Nikolaevich), 1887-1953.