Columbia subject headings:
Aragon (Spain)--History--Sources.
Hearth-money--Spain--Aragon.
Names, Geographical--Spain--Aragon.
Taxation--Spain--Aragon--Lists.
Harvard subject headings:
Aragon (Spain)--History--Sources.
Hearth-money--Spain--Aragon.
Names, Geographical--Spain--Aragon.
Taxation--Spain--Aragon--Lists.
Princeton subject headings:
Aragon (Spain)--History--Sources.
Hearth-money--Spain--Aragon.
Names, Geographical--Spain--Aragon.
Taxation--Spain--Aragon--Lists.