Columbia subject headings:
Harvard subject headings:
Astronomy, Medieval
Astronomy--Early works to 1800
Sacro Bosco, Joannes de, active 1230. Sphaera mundi.
Princeton subject headings:
Astronomy, Medieval.
Astronomy--Early works to 1800.
Sacro Bosco, Joannes de, active 1230. Sphaera mundi.