Columbia subject headings:
Harvard subject headings:
Asturias (Spain)--History--Sources.
Asturias (Spain)--Kings and rulers--Sources.
Leon (Kingdom)--History--Sources.
Leon (Kingdom)--Kings and rulers--Sources.
Princeton subject headings:
Asturias (Spain)--History--Early works to 1800.
Historiography--Spain--Asturias--History.
Spain--History--711-1516.