Columbia subject headings:
Architecture--Conservation and restoration--Germany (West)
Historic buildings--Conservation and restoration--Germany (West)
Harvard subject headings:
Architecture--Conservation and restoration--Germany (West)
Architecture--Germany--Conservation and restoration.
Historic buildings--Conservation and restoration--Germany (West)
Historic buildings--Conservation and restoration--Germany.
Princeton subject headings:
Architecture--Germany (West)--Conservation and restoration.
Historic buildings--Germany (West)--Conservation and restoration.