Columbia subject headings:
Harvard subject headings:
Aristophanes--Criticism and interpretation.
Aristotle--Criticism and interpretation.
Greek drama (Tragedy)--History and criticism.
Philosophy, Ancient.
Tragedy--History and criticism.
Princeton subject headings:
Aristophanes--Aesthetics.
Aristotle--Contributions in concept of the tragic.
Greek drama (Tragedy)--History and criticism--Theory, etc.