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- Qāḍīʹzādah, Mūsá ibn Muḥammad, -approximately 1436. Sharḥ al-Jaghmīnī1
- Qūshjī, ʻAlī ibn Muḥammad, -1474 or 1475. Fatḥīyah1
- Qūshjī, ʻAlī ibn Muḥammad, d. 1474 or 5. Risālah dar hayʼat1
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- Radha (Hindu deity)1
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- Rasāʼil (Ikhwān al-Ṣafāʼ)1
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- Recipes1
- Redemption1
- Reformation1
- Regiomontanus, Joannes, 1436-1476. Calendarium1
- Registers (Lists)1
- Regula (Benedict, Saint, Abbot of Monte Cassino)1
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