Columbia subject headings:
Architecture--Spain--Barcelona--History.
Barcelona (Spain)
Catalogues raisonnés.
Gaudí, Antoni, 1852-1926--Drawings--Catalogs.
Gaudí, Antoni, 1852-1926.
Harvard subject headings:
Architecture--Spain--Barcelona--History.
Barcelona (Spain)
Gaudí, Antoni, 1852-1926
Princeton subject headings:
Gaudí, Antoni, 1852-1926.