Columbia subject headings:
Harvard subject headings:
Monarchy--Spain--Early works to 1800.
Spain--History--Early works to 1800.
Spain--History--Philosophy--Early works to 1800.
Spain--Kings and rulers--Early works to 1800.
Princeton subject headings:
Monarchy--Spain--Early works to 1800.
Spain--History--Early works to 1800.
Spain--History--Philosophy--Early works to 1800.
Spain--Kings and rulers--Early works to 1800.