Risālah fī kayfīyat al-ʻamal bil-nisbah al-sittīnīyah

Author(s):

• Ibn al-Shāṭir, ʻAlī ibn Ibrāhīm, 1304-1375

Manuscripts:

• MS. Selden superius 61 (Bodleian Library, Oxford University) — 14th Century

The above references reflect only the current coverage of the online catalogue and may not be comprehensive.