Columbia subject headings:
Harvard subject headings:
Bishops--History--Congresses.
Fathers of the church--Congresses.
Princeton subject headings:
Bishops--History--Congresses.
Catholic Church--Bishops--History--Congresses.
Church and state--Rome--History--Congresses.
Church history--4th century--Congresses.
Episcopacy--History of doctrines--Early church, ca. 30-600--Congresses.
Fathers of the church, Greek--Congresses.
Fathers of the church, Latin--Congresses.
Pastoral theology--Catholic Church--History--Congresses.
Pastoral theology--Rome--History--Congresses.