Columbia subject headings:
Death--Congresses.
Death--Religious aspects--Congresses.
Future life--Congresses.
Immortality (Philosophy)--Congresses.
Philosophy, Ancient--Congresses.
Harvard subject headings:
Death--Congresses
Death--Religious aspects--Congresses.
Future life--Congresses.
Immortality (Philosophy)--Congresses.
Philosophy, Ancient--Congresses.
Princeton subject headings:
Death--History--Congresses.
Future life--History--Congresses.