Columbia subject headings:
Madrid (Spain)--Politics and government--19th century.
Madrid (Spain)--Social conditions.
Urbanization--Spain--Madrid--History--19th century.
Harvard subject headings:
Madrid (Spain)--Politics and government--19th century.
Madrid (Spain)--Social conditions.
Urbanization--Spain--Madrid--History--19th century.
Princeton subject headings:
Madrid (Spain)--Politics and government--19th century.
Madrid (Spain)--Social conditions--19th century.
Urbanization--Spain--Madrid--History--19th century.