Columbia subject headings:
Church--History of doctrines--Early church, ca. 30-600.
Hippolytus, Antipope, approximately 170-235 or 236.
Harvard subject headings:
Church history--Primitive and early church, ca. 30-600
Church--History of doctrines.
Hippolytus, Antipope, approximately 170-235 or 236--Theology.
Princeton subject headings:
Church--History of doctrines--Early church, ca. 30-600.
Hippolytus, Antipope, approximately 170-235 or 236.