Columbia subject headings:
Harvard subject headings:
Architecture--Spain--Catalonia--20th century.
Cities and towns--Growth--Spain--Catalonia.
City planning--Spain--Catalonia.
Regional planning--Spain--Catalonia.
Princeton subject headings:
Architecture--Spain--Catalonia--Exhibitions.
Cities and towns--Spain--Catalonia--Exhibitions.
City planning--Spain--Catalonia--Exhibitions.