Columbia subject headings:
Music--Soviet Union--20th century--History and criticism.
Prokofiev, Sergey, 1891-1953.
Shostakovich, Dmitriĭ Dmitrievich, 1906-1975.
Harvard subject headings:
Opera--Soviet Union
Prokofiev, Sergey, 1891-1953. Operas.
Shostakovich, Dmitriĭ Dmitrievich, 1906-1975. Operas
Princeton subject headings:
Music--Soviet Union--20th century--History and criticism.
Prokofiev, Sergey, 1891-1953.
Shostakovich, Dmitriĭ Dmitrievich, 1906-1975.