Columbia subject headings:
Cerdá, Ildefonso, 1815-1876--Exhibitions.
Cities and towns--Spain--Barcelona--Exhibitions.
City planning--Spain--Barcelona--Exhibitions.
Harvard subject headings:
Barcelona (Spain)--History--Exhibitions.
Cerdá, Ildefonso, 1815-1876--Exhibitions.
City planning--Spain--Barcelona--Exhibitions.
Urbanism--Spain--Barcelona--Exhibitions.
Princeton subject headings:
Barcelona (Spain)--History--Exhibitions.
Cerdá, Ildefonso, 1815-1876--Exhibitions.
City planning--Spain--Barcelona--Exhibitions.
Urbanism--Spain--Barcelona--Exhibitions.