Columbia subject headings:
Harvard subject headings:
24 (Television program)
Television programs--Philosophy.
Television programs--United States--Plots, themes, etc.
Television series--United States--History and criticism.
Terrorism on television--History.
Princeton subject headings:
24 (Television program)
Television programs--Philosophy.
Television programs--United States--Plots, themes, etc.
Television series--United States--History and criticism.
Terrorism on television--History.