Columbia subject headings:
Aragon (Spain)--History.
Catalonia (Spain)--History.
Harvard subject headings:
Aragon (Spain)--History--Medieval, 500-1500.
Aragon (Spain)--History.
Catalonia (Spain)--History--Medieval, 500-1500.
Catalonia (Spain)--History.
Princeton subject headings:
Aragon (Spain)--History--Sancho Ramírez, 1063-1094.
Catalonia (Spain)--History.