Columbia subject headings:
Architecture--Conservation and restoration--Europe--Congresses.
Art--Conservation and restoration--Europe--Congresses.
Cultural property--Protection--Europe--Congresses.
Historic buildings--Conservation and restoration--Europe--Congresses.
Harvard subject headings:
Architecture--Conservation and restoration--Europe--Congresses.
Art--Conservation and restoration--Europe--Congresses.
Cultural property--Protection--Europe--Congresses.
Historic buildings--Conservation and restoration--Europe--Congresses.
Princeton subject headings:
Architecture--Conservation and restoration--Europe--Congresses.
Art--Conservation and restoration--Europe--Congresses.
Cultural property--Protection--Europe--Congresses.
Historic buildings--Conservation and restoration--Europe--Congresses.