- Astronomy135
- Astronomy, Ancient1
- Astronomy, Arab79
- Astronomy, Arab--Tables5
- Astronomy, Greek3
- Astronomy, Medieval17
- Astronomy--Charts, diagrams, etc--Early works to 18001
- Astronomy--Mathematics2
- Astronomy--Popular works1
- Astronomy--Religious aspects--Islam1
- Astronomy--Religious aspects--Jainism1
- Astronomy--Tables3
- Aswānī, ʻUthmān ibn Saʻd Allāh, active 19th century. Risālat al-ikhwān1
- Athanasian Creed1
- Athīr al-Dīn al-Abharī, al-Mufaḍḍal ibn ʻUmar, -1265. Hidāyat al-ḥikmah1
- Athīr al-Dīn al-Abharī, al-Mufaḍḍal ibn ʻUmar, -1265. Hidāyat al-ḥikmah5
- Atlases6
- Atlases (Geographic)20
- Atonement1
- Atonement (Hinduism)13