Columbia subject headings:
Aachener Dom.
Choirs (Architecture)--Germany--Aachen.
Church architecture--Conservation and restoration--Germany--Aachen.
Church architecture--Germany--Aachen.
Church decoration and ornament--Germany--Aachen.
Harvard subject headings:
Aachener Dom. Chor.
Church architecture--Conservation and restoration--Germany--Aachen.
Church architecture--Germany--Aachen.
Church decoration and ornament--Conservation and restoration--Germany--Aachen.
Church decoration and ornament--Germany--Aachen.
Princeton subject headings:
Aachener Dom. Chor
Cathedrals--Germany--Aachen.
Church architecture--Conservation and restoration--Germany--Aachen.
Church architecture--Germany--Aachen.
Church decoration and ornament--Germany--Aachen.