al-Mafrūḍāt / li-Thābit ibn Qurrah al-Ḥarrānī al-Ṣābī.Thābit ibn Qurrah al-Ḥarrānī, d. 901.[17--?]Followed by 1 leaf of notes.Tract on geometrical data, edited by Naṣīr al-Dīn al-Ṭūsī.Islamic binding, in brown.Modern (18th century?) cursive hand, in red and black, with diagrams.With: 6 other titles.text