Paul Kunitzsch Sort by: Title (A–Z)Title (Z–A)Newest FirstOldest First ʿABD-AL-RAḤMĀN B. ʿOMAR ṢŪFĪ ʿABD-AL-RAḤMĀN B. ʿOMAR ṢŪFĪ, ABU’L-ḤOSAYN, astronomer, especially well versed in knowledge of the fixed stars, b. 291/903 in Ray, d….