Columbia subject headings:
Bloch, Ernst, 1885-1977--Knowledge and learning.
Bloch, Ernst, 1885-1977. Geist der Utopie.
Music--Philosophy and aesthetics.
Songs and music.
Utopias.
Harvard subject headings:
Bloch, Ernst, 1885-1977--Knowledge--Music.
Bloch, Ernst, 1885-1977. Geist der Utopie
Music--Philosophy and aesthetics
Utopias
Princeton subject headings:
Bloch, Ernst, 1885-1977--Knowledge--Music.
Bloch, Ernst, 1885-1977. Geist der Utopie.
Music--Philosophy and aesthetics.
Utopias.