Columbia subject headings:
Architecture--Europe--Congresses.
Architecture--France--Congresses.
Cities and towns--Europe--Congresses.
Cities and towns--France--Congresses.
Cultural property--Europe--Congresses.
Cultural property--France--Congresses.
Harvard subject headings:
Architecture--Europe--Congresses.
Architecture--France--Congresses.
Cities and towns--Europe--Congresses
Cities and towns--France--Congresses.
Cultural property--Europe--Congresses.
Cultural property--France--Congresses.
Princeton subject headings: