Columbia subject headings:
Art, German--20th century--Exhibitions--Germany--Metropolregion Rhein-Ruhr.
Christian art and symbolism--Germany--Metropolregion Rhein-Ruhr--Modern period, 1500---Exhibitions.
Christian poetry, German--Germany--Metropolregion Rhein-Ruhr--20th century--Exhibitions.
Harvard subject headings:
Christian art and symbolism--Germany--Rhineland--Exhibitions.
Christian art and symbolism--Germany--Ruhr (Region)--Exhibitions.
Jesus Christ--Art--Exhibitions.
Princeton subject headings: