Columbia subject headings:
Philosophy, Medieval--Congresses.
Theology--Early works to 1800--Congresses.
Theology--History--Middle Ages, 600-1500.
Harvard subject headings:
Philosophy, Medieval--Congresses.
Theology--History--Middle Ages, 600-1500--Congresses
Princeton subject headings:
Philosophy, Medieval--Congresses.
Theology--History--Middle Ages, 600-1500--Congresses.