Columbia subject headings:
Ballet--France--Paris--History.
Debussy, Claude, 1862-1918.
Music--20th century--History and criticism.
Stravinsky, Igor, 1882-1971.
Harvard subject headings:
Ballet--France--Paris--History.
Ballets russes
Debussy, Claude, 1862-1918
Music--20th century--History and criticism
Stravinsky, Igor, 1882-1971
Princeton subject headings: