Columbia subject headings:
Gnosticism--Congresses.
Plotinus--Congresses.
Theology--Early works to 1800--Congresses.
Theology--History--Early church, ca. 30-600.
Harvard subject headings:
Christianity--Influence--Plotinus.
Gnosticism--Congresses
Plotinus--Congresses.
Theology--Early works to 1800--Congresses.
Theology--History--Early Church, ca. 30-600.--Congresses.
Theology--History--Early church, ca. 30-600--Congresses.
Princeton subject headings:
Gnosticism--Congresses.
Plotinus--Congresses.
Theology--History--Early church, ca. 30-600--Congresses.