Columbia subject headings:
Architecture, Industrial--France--History--18th century--Congresses.
Architecture--France--History--18th century--Congresses.
Ledoux, Claude Nicolas, 1736-1806--Congresses.
Harvard subject headings:
Princeton subject headings:
Architecture--France--History--18th century--Congresses.
City planning--France--History--18th century--Congresses.
Ledoux, Claude Nicolas, 1736-1806--Congresses.
Visionary architecture--Congresses.