Columbia subject headings:
Councils and synods--History--Congresses.
Fathers of the church--Influence--Congresses.
Theology--Study and teaching--Catholic Church--History--Congresses.
Harvard subject headings:
Councils and synods--History--Congresses.
Fathers of the church--Influence--Congresses.
Theology--Study and teaching--Catholic Church--History--Congresses.
Princeton subject headings: