Columbia subject headings:
Christianity and culture--History--Early church, ca. 30-600--Congresses.
Christianity and culture--History--Early church, ca. 30-600.
Christianity and other religions--Paganism--Congresses.
Church history--Primitive and early church, ca. 30-600--Congresses.
Church history--Primitive and early church, ca. 30-600.
Paganism--Relations--Christianity--Congresses.
Paganism--Relations--Christianity.
Harvard subject headings:
Christianity and culture--History--Early church, ca. 30-600.
Christianity and other religions--Paganism--History.
Church history--Primitive and early church, ca. 30-600
Paganism--Relations--Christianity--History.
Princeton subject headings: