Columbia subject headings:
Castile (Spain)--History--19th century.
Castile (Spain)--Population--History--19th century.
Castile (Spain)--Social conditions.
Harvard subject headings:
Castile (Spain)--History--19th century.
Castile (Spain)--Population--History--19th century.
Castile (Spain)--Population--History.
Castile (Spain)--Social conditions.
Cholera--Spain--Valladolid--History--19th century.
Epidemics--Spain--Valladolid--History--19th century.
Riots--Spain--Castile--History--19th century.
Spain--Social conditions--19th century.
Princeton subject headings:
Cholera--Spain--Valladolid--History--19th century.
Epidemics--Social aspects--Spain--Valladolid--History--19th century.
Valladolid (Spain)--Economic conditions.
Valladolid (Spain)--History--Bibliography.
Valladolid (Spain)--History.
Valladolid (Spain)--Social conditions.