Columbia subject headings:
Harvard subject headings:
Huelva (Spain : Province)--Economic conditions.
Huelva (Spain : Province)--Statistics.
Princeton subject headings:
Huelva (Spain : Province)--Economic conditions.
Huelva (Spain : Province)--History.
Huelva (Spain : Province)--Population--History--18th century.
Huelva (Spain : Province)--Social conditions.