Keywords
- Apostles' Creed1
- Apparitions1
- Arab countries1
- Architecture1
- Arianism1
- Arithmetic1
- Armies1
- Artisans--Taxation1
- Asceticism1
- Asceticism--Early church1
- Asia1
- Astrology, Roman1
- Astronomy, Ancient1
- Astronomy, Arab1
- Astronomy, Greek1
- Augustus, Emperor of Rome, 63 B.C.-14 A.D.1
- Authors, Latin1
- Aveiro, Gabriel de Lencastre, Duque de, 1667-17451
- Azar, Menaḥem ben Natan1
- Bartolo, of Sassoferrato, 1313-13571