Columbia subject headings:
Architecture--Conservation and restoration--Spain--Catalonia.
Architecture--Conservation and restoration--Spain.
Harvard subject headings:
Architecture--Conservation and restoration--Spain--Catalonia.
Architecture--Conservation and restoration--Spain.
Historic buildings--Conservation and restoration--Spain--Catalonia.
Historic buildings--Conservation and restoration--Spain.
Historic preservation--Government policy--Spain--Catalonia.
Historic preservation--Government policy--Spain.
Princeton subject headings: