Columbia subject headings:
Architecture--Spain--Madrid--History--20th century.
Architecture--Spain--Madrid--History--21st century.
City planning--Spain--Madrid--History.
Madrid (Spain)--Buildings, structures, etc.
Harvard subject headings:
Architecture--Spain--Madrid--20th century.
Architecture--Spain--Madrid--21st century.
City planning--Spain--Madrid--History.
Madrid (Spain)--Buildings, structures, etc.
Princeton subject headings:
Architecture--Spain--Madrid--20th century.
Architecture--Spain--Madrid--21st century.
City planning--Spain--Madrid--History.
Madrid (Spain)--Buildings, structures, etc.