Columbia subject headings:
Harvard subject headings:
Architecture, Modern--19th century--Spain--Catalonia.
Architecture, Modern--20th century--Spain--Catalonia.
Art nouveau (Architecture)--Spain--Catalonia.
Art nouveau--Spain--Catalonia.
Decoration and ornament, Architectural--Spain--Catalonia.
Modernism (Art)--Spain--Catalonia.
Princeton subject headings:
Architecture, Modern--20th century--Spain--Catalonia.
Art nouveau (Architecture)--Spain--Catalonia.
Decoration and ornament, Architectural--Spain--Catalonia.