Columbia subject headings:
Harvard subject headings:
Agriculture and state--Spain--History--18th century.
Agriculture and state--Spain.
Agriculture--Economic aspects--Spain--History--18th century.
Agriculture--Spain--History--18th century.
Agriculture--Spain--History.
Spain--Rural conditions
Princeton subject headings:
Agriculture and state--Spain--History--18th century.
Agriculture--Economic aspects--Spain--History--18th century.
Agriculture--Spain--History--18th century.
Spain--Rural conditions.