Columbia subject headings:
Monasteries--Europe--History--Congresses.
Monasticism and religious orders--Europe--History--Congresses.
Orthodox Eastern monasteries--History--Congresses.
Orthodox Eastern monasticism and religious orders--History--Congresses.
Harvard subject headings:
Church history--Middle Ages, 600-1500--Congresses.
Monasticism and religious orders--History--Middle Ages, 600-1500--Congresses.
Orthodox Eastern monasticism and religious orders--History--Congresses.
Princeton subject headings:
Church history--Middle Ages, 600-1500--Congresses.
Monasticism and religious orders--History--Middle Ages, 600-1500--Congresses.
Orthodox Eastern monasticism and religious orders--History--Congresses.