Columbia subject headings:
Harvard subject headings:
Apologetics--Early works to 1800
Augustine, of Hippo, Saint, 354-430. De civitate Dei
Kingdom of God.
Rome--History
Princeton subject headings:
Apologetics--History--Early church, ca. 30-600.
Augustine, of Hippo, Saint, 354-430. De civitate Dei.
Kingdom of God.
Rome--History.