Columbia subject headings:
Harvard subject headings:
Alfonso XI, King of Castile and Leon, 1311-1350--Chronology.
Alfonso XI, King of Castile and Leon, 1311-1350--Travel.
Castile (Spain)--History--Alfonso XI, 1312-1350.
Spain--History--711-1516.
Princeton subject headings:
Alfonso XI, King of Castile and Leon, 1311-1350--Travel--Spain.
Castile (Spain)--History--Alfonso XI, 1312-1350.
Spain--History--711-1516.
Spain--Kings and rulers--Travel--Spain.