Columbia subject headings:
Harvard subject headings:
Charles III, King of Spain, 1716-1788.
City planning--Spain--Madrid--History--18th century.
Madrid (Spain)--History.
Social problems--Spain--Madrid--History--18th century.
Princeton subject headings:
Charles III, King of Spain, 1716-1788.
Madrid (Spain)--History--18th century.
Spain--Civilization--18th century.