Columbia subject headings:
Alfonso X, King of Castile and Leon, 1221-1284.
Astronomy, Medieval--Sources.
Astronomy--Tables--Early works to 1800.
Harvard subject headings:
Astronomy, Medieval--Tables.
Planets--Tables.
Princeton subject headings:
Alfonso X, King of Castile and Leon, 1221-1284.
Astronomy, Medieval--Sources.
Astronomy--Tables--Early works to 1800.