Columbia subject headings:
Civilization, Modern.
Popular culture--History--20th century.
Popular culture--History--21st century.
Popular literature--History and criticism.
Popular music--History and criticism.
Harvard subject headings:
Avant-garde (Aesthetics)--History--20th century.
Pop art--History--20th century.
Popular culture--History--20th century
Popular literature--20th century--History and criticism.
Popular music--20th century--History and criticism.
Princeton subject headings: