Columbia subject headings:
Aesthetics, Modern--20th century.
Bloch, Ernst, 1885-1977--Aesthetics.
Harvard subject headings:
Aesthetics, Modern--20th century.
Bloch, Ernst, 1885-1977--Aesthetics.
Princeton subject headings:
Aesthetics, Modern--20th century.
Bloch, Ernst, 1885-1977--Aesthetics.