‘Abbasids, 89 sqq. Abu Hanifa, 73 Abu l-‘Abbas, 101 Abu l-Faraj, 52 Abu Yazid, 194 Albertus Magnus, 235 Alexander of Aphrodisias, 4 sqq., 18 Alexandrian period, 10 ‘Alids, 93 al-Allaf, 124 Arian controversy, 27 sq. Aristotle, 5, 6 sq.; .