Columbia subject headings:
Architecture, Romanesque--Germany--Rhineland.
Christian art and symbolism--Medieval, 500-1500.
Church architecture--Conservation and restoration--Germany--Rhineland.
Church architecture--Germany--Rhineland.
Windows--Germany--Rhineland.
Harvard subject headings:
Architecture, Romanesque--Germany--Rhineland--Details--Conservation and restoration.
Church architecture--Germany--Rhineland--Details--Conservation and restoration.
Windows--Germany--Rhineland--Conservation and restoration.
Princeton subject headings:
Architecture, Romanesque--Germany (West)--Rhineland-Palatinate.
Church architecture--Details--Conservation and restoration.
Windows--Conservation and restoration.