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- Abbaye aux Dames (Caen, France)1
- Abbazia di S. Maria di Porcilia (Padua, Italy)1
- Abbazia di Santo Stefano (Pistoia, Italy)1
- Ablutions (Islamic law)1
- Abraham (Biblical patriarch)1
- Absolution1
- Abu Natser Shemuʹel, ha-Leṿi1
- Abu ʻAmar Seʹadyah, ha-Leṿi1
- Abū Madyan, -1197 or 1198. ʻAqīdah1
- Abū Yazīd Bisṭāmī, Ṭayfūr ibn ʻĪsá, -874?1
- Abū al-Layth al-Samarqandī, Naṣr ibn Muḥammad, -983? Muqaddimah1
- Abū al-Saʻūd Muḥammad ibn Muḥammad, 1492 or 1493-1574 or 1575. Fatāwá1
- Abū al-Suʻūd Muḥammad, 1181-12471
- Abū al-ʻAbbās al-Baṣīr. Qaṣīdah1
- Abū ʻUbaydah ibn al-Jarrāḥ, ʻĀmir ibn ʻAbd Allāh, -6391
- Academic theses1
- Acciaioli, Antonio1
- Acciaioli, Francesco1
- Acciaiuoli, Roberto, 1467-15471