Columbia subject headings:
Apologetics--Early works to 1800.
Apologetics--History--Early church, ca. 30-600.
Nicene Creed.
Theology, Doctrinal--History--Early church, ca. 30-600.
Trinity--History of doctrines--Early church, ca. 30-600.
Harvard subject headings:
Incarnation--History of doctrines--Early church, ca. 30-600.
Incarnation.
Nicene Creed.
Trinity--History of doctrines--Early church, ca. 30-600.
Trinity.
Princeton subject headings:
Apologetics--History--Early church, ca. 30-600.
Nicene Creed.
Theology, Doctrinal--History--Early church, ca. 30-600.
Trinity--History of doctrines--Early church, ca. 30-600.