Columbia subject headings:
Aesthetics.
Art, Modern--20th century--Themes, motives.
Art, Modern--21st century--Themes, motives.
Harvard subject headings:
Aesthetics
Art, Modern--20th century--Themes, motives
Art, Modern--21st century--Themes, motives.
Princeton subject headings:
Aesthetics.
Art, Modern--20th century--Themes, motives.
Art, Modern--21st century--Themes, motives.