Columbia subject headings:
Gregory I, Pope, approximately 540-604--Art.
Jesus Christ--Passion--Art.
Mass in art.
Harvard subject headings:
Christian art and symbolism--Medieval, 500-1500--Themes, motives
Christian art and symbolism--Renaissance, 1450-1600--Themes, motives.
Gregory I, Pope, approximately 540-604--Art.
Jesus Christ--Passion--Art.
Mass in art.
Princeton subject headings:
Art, Medieval--Themes, motives.
Art.
Christian art and symbolism.
Gregory I, Pope, approximately 540-604--Art.
Jesus Christ--Apparitions and miracles.
Lord's Supper in art.
Mass in art.