Columbia subject headings:
Hippolytus, Antipope, approximately 170-235 or 236.
Philosophy and religion--History.
Philosophy, Ancient.
Harvard subject headings:
Hippolytus, Antipope, approximately 170-235 or 236.
Philosophy and religion--History.
Philosophy, Ancient.
Princeton subject headings:
Hippolytus, Antipope, approximately 170-235 or 236.
Philosophy and religion.
Philosophy, Ancient.