Columbia subject headings:
Harvard subject headings:
Agricultural laws and legislation--Spain--History--19th century.
Agriculture and state--Spain--History--19th century.
Agriculture--Economic aspects--Spain--History--19th century.
Agriculture--Taxation--Spain--History--19th century.
Fiscal policy--Spain--History--19th century.
Princeton subject headings:
Agriculture--Taxation--Spain--History--19th century.
Fiscal policy--Spain--History--19th century.