Columbia subject headings:
Christianity--Philosophy--Congresses.
Neoplatonism--Congresses.
Theology--Congresses.
Harvard subject headings:
Christianity--Philosophy--Congresses
Neoplatonism--Congresses.
Theology--Congresses
Princeton subject headings:
Christianity--Philosophy--Congresses.
Neoplatonism--Congresses.
Theology--Congresses.