Columbia subject headings:
Alfonso VII, The Emperor, King of Castile, 1104-1157.
Cid, approximately 1043-1099--Romances.
Leon (Kingdom)--History--Sources.
Nájera (Spain)--History--Sources.
Spain--History--711-1516--Sources.
Harvard subject headings:
Alfonso VII, The Emperor, King of Castile, 1104-1157.
Cid, approximately 1043-1099--Romances.
Leon (Kingdom)--History--Sources.
Nájera (Spain)--History--Sources.
Spain--History--711-1516--Sources
Princeton subject headings:
Spain--History--711-1516--Sources.