Columbia subject headings:
Harvard subject headings:
Alfonso X, King of Castile and Leon, 1221-1284--Art.
Chess--Early works to 1800
Dice--Early works to 1800.
Escorial. Real Biblioteca. Manuscript. T.I.6.
Illumination of books and manuscripts, Medieval--Spain--Castile.
Manuscripts, Spanish--Facsimiles.
Princeton subject headings:
Alfonso X, King of Castile and Leon, 1221-1284. Libros de ajedrez, dados y tablas--Illustrations.
Chess--Early works to 1800.
Illumination of books and manuscripts, Medieval--Spain--Castile.