Columbia subject headings:
Architecture--Conservation and restoration--Germany--Prussia.
Architecture--Germany--Berlin--History--19th century.
Conservatorships--Germany.
Dom (Trier, Germany)
Monuments--Conservation and restoration.
Quast, Ferdinand von, 1807-1877.
Harvard subject headings:
Architecture--Conservation and restoration--Germany--Prussia--Congresses.
Architecture--Germany--Berlin--19th century--Congresses.
Monuments--Conservation and restoration--Germany--Congresses.
Quast, Ferdinand von, 1807-1877--Congresses.
Princeton subject headings:
Architecture--Conservation and restoration--Germany--Prussia.
Architecture--Germany--Berlin--19th century.
Conservatorships--Germany.
Dom (Trier, Germany)
Monuments--Conservation and restoration.
Quast, Ferdinand von, 1807-1877.