Columbia subject headings:
Barcelona (Spain)--History.
Urbanization--Spain--Barcelona--History.
Harvard subject headings:
Architecture, Modern--Spain--Barcelona.
Barcelona (Spain)--History.
City planning--Spain--Barcelona--History.
Urbanization--Spain--Barcelona
Urbanization--Spain--Barcelona--History.
Princeton subject headings:
Barcelona (Spain)--History.
Urbanization--Spain--Barcelona--History.