Columbia subject headings:
Harvard subject headings:
Castile (Spain)--Politics and government.
Castile (Spain)--Social conditions.
Ladero Quesada, Miguel Angel--Bibliography.
Power (Social sciences)--Spain--Castile--History.
Power (Social sciences)--Spain--Castille--History.
Spain--History--711-1516.
Princeton subject headings:
Castile (Spain)--Politics and government.
Power (Social sciences)--Spain--Castile--History.
Spain--History--711-1516.