Columbia subject headings:
Literature, Medieval--History and criticism--Congresses.
Mysticism--Congresses.
Spiritual life--Christianity--History of doctrines--Middle Ages, 600-1500--Congresses.
Harvard subject headings:
Circle--Religious aspects--Congresses.
Mysticism--Congresses
Spiritual life--Christianity--History of doctrines--Middle Ages, 600-1500--Congresses.
Spiritual life--Middle Ages, 600-1500--Congresses.
Princeton subject headings:
Literature, Medieval--History and criticism--Congresses.
Spiritual life--Christianity--History of doctrines--Middle Ages, 600-1500--Congresses.