Columbia subject headings:
Celts--Portugal--Religion.
Celts--Spain--Religion.
Portugal--Religion.
Romans--Portugal--Religion.
Romans--Spain--Religion.
Spain--Religion.
Visigoths--Spain--Religion.
Harvard subject headings:
Celts--Portugal--Religion.
Celts--Spain--Religion.
Portugal--Religion.
Romans--Portugal--Religion.
Romans--Spain--Religion.
Spain--Religion.
Visigoths--Spain--Religion.
Princeton subject headings:
Celts--Portugal--Religion.
Celts--Spain--Religion.
Portugal--Religion.
Romans--Portugal--Religion.
Romans--Spain--Religion.
Spain--Religion.
Visigoths--Spain--Religion.