Columbia subject headings:
Empedocles.
Philosophy, Ancient.
Poetry, Ancient--History and criticism.
Pre-Socratic philosophers.
Harvard subject headings:
Empedocles
Philosophy, Ancient
Poetry, Ancient--History and criticism.
Pre-Socratic philosophers
Princeton subject headings:
Empedocles.
Philosophy, Ancient.
Poetry, Ancient--History and criticism.
Pre-Socratic philosophers.