Columbia subject headings:
Aragon (Spain)--Economic conditions.
Prices--Spain--Aragon.
Wages--Spain--Aragon.
Harvard subject headings:
Aragon (Spain)--Economic conditions.
Economic history--Medieval, 500-1500
Prices--Spain--Aragon--History.
Wages--Spain--Aragon--History.
Princeton subject headings:
Aragon (Spain)--Economic conditions.
Prices--Spain--Aragon--History.
Wages--Spain--Aragon--History.