Columbia subject headings:
Castile (Spain)--History.
Spain--History--711-1516.
Harvard subject headings:
Castile (Spain)--Economic conditions.
Castile (Spain)--History.
Castile (Spain)--Social conditions.
Princeton subject headings:
Castile (Spain)--Economic conditions.
Castile (Spain)--History.
Castile (Spain)--Social conditions.