Columbia subject headings:
Christianity--Asia.
Christianity--Early works to 1800.
Christianity--Syria.
Church history.
Harvard subject headings:
Christian literature, Early--History and criticism--Congresses.
Christian literature, Early--Soviet Union--Congresses.
Christianity--Middle East.
Church history--Middle Ages, 600-1500--Congresses.
Eastern churches--History--Congresses.
Fathers of the church--Congresses.
Literature, Medieval
Princeton subject headings: