Columbia subject headings:
Harvard subject headings:
Aragon (Spain)--History--Sources.
Land grants--Spain--Aragon--History.
Land tenure--Spain--Aragon--History.
Tax exemption--Spain--Aragon--History.
Princeton subject headings:
Aragon (Spain)--History--Sources.
Land grants--Spain--Aragon--History.
Land tenure--Spain--Aragon--History.