Columbia subject headings:
Cathedrals--Conservation and restoration--Germany--Regensburg.
Cathedrals--Germany--Regensburg.
Regensburg (Germany)--Buildings, structures, etc.
Regensburger Dom.
Harvard subject headings:
Cathedrals--Conservation and restoration--Germany--Regensburg.
Cathedrals--Germany--Regensburg--Conservation and restoration.
Cathedrals--Germany--Regensburg.
Regensburg (Germany)--Buildings, structures, etc.
Regensburger Dom
Princeton subject headings:
Cathedrals--Germany (West)--Regensburg.
Regensburger Dom.