Columbia subject headings:
Harvard subject headings:
Catechetics--History--Early church, ca. 30-600--Congresses.
Church history--Primitive and early church, ca. 30-600--Congresses.
Fathers of the church--Congresses.
Princeton subject headings:
Bible--Criticism, interpretation, etc.--History--Early church, ca. 30-600--Congresses.
Catechetics--Catholic Church--History--Congresses.
Catechetics--History--Early church, ca. 30-600--Congresses.
Fathers of the church--Congresses.