Columbia subject headings:
Church history--Primitive and early church, ca. 30-600--Congresses.
Gnosticism--Congresses.
Nag Hammadi codices--Congresses.
Harvard subject headings:
Church history--Primitive and early church, ca. 30-600--Congresses
Conference papers and proceedings
Gnosticism--Congresses
Nag Hammadi codices--Congresses.
Princeton subject headings: