1. IO Islamic 2166 Reference (shelfmark): IO Islamic 2166 Title: Mudkhal fī al-aḥkām Scope & Content: Author: Sahl ibn Bishr, active 822-850 VIAF ID: 10004143 , Or Author: ʿAbd-ar-Raḥmān aṣ-Ṣūfī, Ibn-ʿUmar 903-986 VIAF ID: 117230225 Subject: Astronomy, Arab--Early works to 1800 Collection Area: Oriental Manuscripts Languages: Arabic Date Range: 0917 Extent: 1 item