Columbia subject headings:
Harvard subject headings:
Alfonso X, King of Castile and Leon, 1221-1284--Versification.
Alfonso X, King of Castile and Leon, 1221-1284. Cantigas de Santa María--Concordances.
Portuguese language--Rhyme--Dictionaries.
Princeton subject headings:
Alfonso X, King of Castile and Leon, 1221-1284--Language--Glossaries, etc.
Alfonso X, King of Castile and Leon, 1221-1284. Cantigas de Santa María--Concordances.