Columbia subject headings:
Mahler, Gustav, 1860-1911--Influence.
Music--20th century.
Schubert, Franz, 1797-1828--Influence.
Harvard subject headings:
Mahler, Gustav, 1860-1911--Influence.
Music--19th century--History and criticism
Music--20th century--History and criticism
Schubert, Franz, 1797-1828--Influence.
Princeton subject headings:
Mahler, Gustav, 1860-1911--Influence.
Music--20th century--History and criticism.
Schubert, Franz, 1797-1828--Influence.