Columbia subject headings:
Taxation--Spain--Campóo--History.
Taxation--Spain--Palencia (Province)--History.
Harvard subject headings:
Taxation--Spain--Campóo Region--History.
Taxation--Spain--Palencia (Province)--History.
Princeton subject headings:
Taxation--Spain--Campóo Region--History.
Taxation--Spain--Palencia (Province)--History.