Columbia subject headings:
Anthroposophy.
Composers--Austria--Biography.
Mahler, Gustav, 1860-1911--Philosophy.
Harvard subject headings:
Anthroposophy.
Composers--Austria--Biography
Mahler, Gustav, 1860-1911--Philosophy.
Mahler, Gustav, 1860-1911.
Princeton subject headings:
Anthroposophy.
Composers--Austria--Biography.
Mahler, Gustav, 1860-1911--Philosophy.