Columbia subject headings:
Ferdinand IV, King of Castile and León, 1285-1312--Travel--Sources.
Harvard subject headings:
Castile (Spain)--History--Ferdinand IV, 1295-1312--Sources.
Castile (Spain)--History--Ferdinand IV, 1295-1312.
Ferdinand IV, King of Castile and León, 1285-1312--Sources.
Ferdinand IV, King of Castile and León, 1285-1312--Travel--Spain--Sources.
Ferdinand IV, King of Castile and León, 1285-1312--Travel--Spain.
Princeton subject headings:
Ferdinand IV, King of Castile and León, 1285-1312--Travel--Sources.