Title: ʻUlamāʼ al-ʻArab
Subjects: Science, Biography
Places: Arab countries
People: Thābit ibn Qurrah al-Ḥarrānī (-901), Muḥammad ibn Aḥmad Khuwārizmī (-997 or 998), Alhazen (965-1039), Muḥammad ibn Aḥmad Bīrūnī (973?-1048)