Columbia subject headings:
Sea-power--Spain--Andalusia--History.
Spain--History--711-1516.
Harvard subject headings:
Sea-power--Spain--Andalusia--History.
Spain--History--711-1516.
Umayyad dynasty.
Princeton subject headings:
Africa, North--Relations--Spain.
Spain--History, Naval.
Spain--History--711-1516.
Spain--History--To 711.
Spain--Relations--Africa, North.