Columbia subject headings:
Harvard subject headings:
Architecture--Spain--Barcelona--20th century.
Barcelona (Spain)--Buildings, structures, etc.
City planning--Spain--Barcelona
Landscape architecture--Spain--Barcelona.
Parks--Spain--Barcelona--Design and construction.
Princeton subject headings:
Architecture--Spain--Barcelona--20th century.
Barcelona (Spain)--Buildings, structures, etc.
City planning--Spain--Barcelona.
Landscape architecture--Spain--Barcelona.
Parks--Spain--Barcelona--Design and construction.