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- Abbaye aux Dames (Caen, France)--History--Sources1
- Abbaye d'Aywiers1
- Abbazia di S. Maria di Porcilia (Padua, Italy)1
- Abbazia di Santo Stefano (Pistoia, Italy)1
- Abraham (Biblical patriarch)1
- Absolution1
- Abu Natser Shemuʹel, ha-Leṿi1
- Abu ʻAmar Seʹadyah, ha-Leṿi1
- Abū Yazīd Bisṭāmī, Ṭayfūr ibn ʻĪsá, -874?1
- Abū al-Layth al-Samarqandī, Naṣr ibn Muḥammad, -983? Muqaddimah1
- Abū al-Suʻūd Muḥammad, 1181-12471