Columbia subject headings:
Architecture--Conservation and restoration--Germany.
Art and science.
Art--Conservation and restoration--Germany.
Art--Expertising.
Art--Radiography.
Harvard subject headings:
Architecture--Conservation and restoration--Germany.
Art and science.
Art--Conservation and restoration--Germany.
Art--Expertising--Germany.
Art--Radiography--Germany.
Princeton subject headings:
Architecture--Conservation and restoration--Germany.
Art and science.
Art--Conservation and restoration--Germany.
Art--Expertising.
Art--Radiography.