Columbia subject headings:
Catholic Church--Doctrines--Catholic authors.
Church.
God.
Incarnation.
Sacraments.
Theology, Doctrinal.
Trinity.
Harvard subject headings:
Catholic Church--Doctrines.
Church--History of doctrines.
God--History of doctrines
Incarnation--History of doctrines
Sacraments--History of doctrines.
Theology, Doctrinal.
Princeton subject headings: