Columbia subject headings:
Hermeneutics.
Riddles in literature.
Harvard subject headings:
Classical literature--History and criticism
Hermeneutics.
Philosophy--History
Rhetoric, Ancient.
Riddles in literature.
Riddles--History and criticism
Princeton subject headings:
Classical literature--History and criticism.
Hermeneutics.
Philosophy--History.
Rhetoric, Ancient.
Riddles in literature.
Riddles--History and criticism.