Columbia subject headings:
Bible. Revelation--Criticism, interpretation, etc.--History--Early church, ca. 30-600--Congresses.
Bible. Revelation--Criticism, interpretation, etc.--History--Middle Ages, 600-1500--Congresses.
Bible. Revelation--Illustrations--Congresses.
Christian art and symbolism--Medieval, 500-1500--Congresses.
Christian art and symbolism--To 500--Congresses.
Harvard subject headings:
Bible. Revelation--Criticism, interpretation, etc.--History--Early church, approximately 30-600--Congresses.
Bible. Revelation--Criticism, interpretation, etc.--History--Middle Ages, 600-1500--Congresses.
Bible. Revelation--Illustrations--Congresses.
Christian art and symbolism--Medieval, 500-1500--Congresses
Christian art and symbolism--To 500--Congresses.
Princeton subject headings:
Bible. Revelation--Criticism, interpretation, etc.--History--Early church, ca. 30-600--Congresses.
Bible. Revelation--Criticism, interpretation, etc.--History--Middle Ages, 600-1500--Congresses.
Bible. Revelation--Illustration--Congresses.
Christian art and symbolism--Medieval, 500-1500--Congresses.
Christian art and symbolism--To 500--Congresses.