Columbia subject headings:
Harvard subject headings:
Alfonso X, King of Castile and Leon, 1221-1284.
Jews--Legal status, laws, etc.--Spain--History--Sources.
Jews--Spain--History--Sources.
Princeton subject headings:
Alfonso X, King of Castile and Leon, 1221-1284.
Jews--Legal status, laws, etc.--Spain--History--Sources.
Jews--Spain--History--Sources.